bostic@OKEEFFE.BERKELEY.EDU.UUCP (03/27/87)
The next four articles posted to comp.bugs.4bsd.ucb-fixes, ARTICLES
#13 through #16, will concern the upcoming DST problem. They contain:
ARTICLE #13 A minimal fix, hopefully easy to install. It contains
fixes for both 4.2 and 4.3 BSD systems. To install
this fix, unshar ARTICLE #13 in an empty directory and
follow the instructions contained in the README file.
ARTICLES #14, #15, #16
What Berkeley has installed. To install this fix, create a
directory containing one other directory; the sub-directory
should be called "tzone". Unshar ARTICLES #15 and #16 in
this sub-directory. Unshar ARTICLE #14 in the top directory.
Follow the instructions contained in the README file.
You are reading ARTICLE #15.
If you have any problems getting either package to work,
please contact me.
Keith Bostic
bostic@ucbvax.berkeley.edu
ucbvax!bostic
seismo!keith
+1 (415) 642-4948
... cut here ...
echo x - Makefile
sed 's/^X//' >Makefile << 'END-of-Makefile'
X# @(#)Makefile 1.1 Makefile 3/4/87
X
XDESTDIR=
X
X# If you want something other than Eastern United States time used on your
X# system, change the line below (after finding the zone you want in the
X# time zone files, or adding it to a time zone file).
X# Alternately, if you discover you've got the wrong time zone, you can just
X# zic -l rightzone
X
XLOCALTIME= US/Pacific
X
X# If you want code inspired by certain emerging standards, add
X# -DSTD_INSPIRED
X# to the end of the "CFLAGS=" line.
X#
X# If you want to handle solar-time-based time zones, remove the
X# "#define NOSOLAR" from the include file usr/include/tzfile.h.
X# (and add solar87 to the DATA= line below).
X
XCFLAGS= -O
X
X# LINTFLAGS is set for 4.[123]BSD systems.
X# If you're using System V, you'll want to comment out the "LINTFLAGS=" line.
X
XLINTFLAGS= -phbaaxc
X
X# BUNDLE was set to "bundle" in the original, "shar" is more universal
X
XBUNDLE= shar
X
X################################################################################
X
XCC= cc
X
XTZCSRCS= zic.c scheck.c ialloc.c
XTZCOBJS= zic.o scheck.o ialloc.o
XTZDSRCS= zdump.c ialloc.c
XTZDOBJS= zdump.o ialloc.o
XDOCS= Theory README Makefile newctime.3 tzfile.5 zic.8 zdump.8
XSOURCES= zic.c zdump.c scheck.c ialloc.c
XDATA= asia australasia europe etcetera northamerica \
X pacificnew systemv
XENCHILADA= $(DOCS) $(SOURCES) $(DATA)
X
Xall: zdump zic
X
Xinstall: zic $(DATA)
X ./zic -d ${DESTDIR}/etc/zoneinfo -l $(LOCALTIME) $(DATA)
X
Xzdump: $(TZDOBJS)
X $(CC) $(CFLAGS) $(LFLAGS) $(TZDOBJS) -o $@
X
Xzic: $(TZCOBJS)
X $(CC) $(CFLAGS) $(LFLAGS) $(TZCOBJS) -o $@
X
XBUNDLES: BUNDLE1 BUNDLE2 BUNDLE3
X
XBUNDLE1: $(DOCS)
X $(BUNDLE) $(DOCS) > $@
X
XBUNDLE2: $(SOURCES)
X $(BUNDLE) $(SOURCES) > $@
X
XBUNDLE3: $(DATA)
X $(BUNDLE) $(DATA) > $@
X
X$(ENCHILADA):
X sccs get $(REL) $(REV) $@
X
Xsure: $(TZCSRCS) $(TZDSRCS)
X lint $(LINTFLAGS) $(CFLAGS) $(TZCSRCS)
X lint $(LINTFLAGS) $(CFLAGS) $(TZDSRCS)
X
Xclean:
X rm -f core *.o *.out REDID_BINARIES zdump zic BUNDLE* \#*
X
XCLEAN: clean
X sccs clean
X
Xlisting: $(ENCHILADA)
X pr $(ENCHILADA) | lpr
X
END-of-Makefile
echo x - README
sed 's/^X//' >README << 'END-of-README'
X@(#)README 3.1
X
XPlease send comments or information to
X seismo!elsie!tz
Xfor forwarding to folks interested in time zone matters.
X
XBe sure to read the comments in "Makefile" and make any changes
Xneeded to make things right for your system.
X
XThis version of the time zone software uses a new format
X(based on the work of Guy Harris, a.k.a guy@sun.UUCP)
Xfor the time zone information files. They are now stored by default in a
Xdirectory named "/etc/zoneinfo" rather than "/etc/tzdir" or "/etc/timezones"
Xas before. If you've already compiled programs with older time zone software,
Xjust leave the "/etc/tzdir" and/or "/etc/timezones" files around until you
Xhave a chance to recompile.
X
XFor better compatability with other versions of time conversion functions,
Xthe time zone abbreviation to be used with localtime's return value is now
Xpointed to by one of the two elements of the (char *) array tzname, rather
Xthan by the (char *) tz_abbr. If you have code that uses tz_abbr, add a
X -DTZA_COMPAT
Xto the end of the
X CFLAGS=
Xline in "Makefile".
X
XTo use the new functions, use a "-lz" option when compiling or linking.
X
XHistorical local time information has been included here not because it
Xis particularly useful, but rather to:
X
X* give an idea of the variety of local time rules that have
X existed in the past and thus an idea of the variety that may be
X expected in the future;
X
X* provide a test of the generality of the local time rule description
X system.
X
XThe information in the time zone data files is by no means authoritative;
Xif you know that the rules are different from those in a file, by all means
Xfeel free to change file (and please send the changed version to seismo!elsie!tz
Xfor use in the future). Europeans take note!
END-of-README
echo x - Theory
sed 's/^X//' >Theory << 'END-of-Theory'
X@(#)Theory 3.1
X
XThese time and date functions are much like the System V Release 2.0 (SVR2)
Xtime and date functions; there are a few additions and changes to extend
Xthe usefulness of the SVR2 functions:
X
X* In SVR2, time display in a process is controlled by the environment
X variable TZ, which "must be a three-letter time zone name, followed
X by a number representing the difference between local time and
X Greenwich Mean Time in hours, followed by an optional three-letter
X name for a daylight time zone;" when the optional daylight time zone is
X present, "standard U.S.A. Daylight Savings Time conversion is applied."
X This means that SVR2 can't deal with other (for example, Australian)
X daylight savings time rules, or situations where more than two
X time zone abbreviations are used in an area.
X
X* In SVR2, time conversion information is compiled into each program
X that does time conversion. This means that when time conversion
X rules change (as in the United States in 1987), all programs that
X do time conversion must be recompiled to ensure proper results.
X
X* In SVR2, time conversion fails for near-minimum or near-maximum
X time_t values when doing conversions for places that don't use GMT.
X
X* In SVR2, there's no tamper-proof way for a process to learn the
X system's best idea of local wall clock. (This is important for
X applications that an administrator wants used only at certain times--
X without regard to whether the user has fiddled the "TZ" environment
X variable. While an administrator can "do everything in GMT" to get
X around the problem, doing so is inconvenient and precludes handling
X daylight savings time shifts--as might be required to limit phone
X calls to off-peak hours.)
X
XThese are the changes that have been made to the SVR2 functions:
X
X* The "TZ" environment variable is used in generating the name of a file
X from which time zone information is read; "TZ" is no longer constrained
X to be a three-letter time zone name followed by a number of hours and
X an optional three-letter daylight time zone name. The daylight saving
X time rules to be used for a particular time zone are encoded in the
X time zone file; the format of the file allows U.S., Australian, and
X other rules to be encoded, and allows for situations where more than
X two time zone abbreviations are used.
X
X It was recognized that allowing the "TZ" environment variable to
X take on values such as "US/Eastern" might cause "old" programs
X (that expect "TZ" to have a certain form) to operate incorrectly;
X consideration was given to using some other environment variable
X (for example, "TIMEZONE") to hold the string used to generate the
X time zone information file name. In the end, however, it was decided
X to continue using "TZ": it is widely used for time zone purposes;
X separately maintaining both "TZ" and "TIMEZONE" seemed a nuisance;
X and systems where "new" forms of "TZ" might cause problems can simply
X give time zone files names such as "EST5EDT" which can be used both by
X "new" programs (as file names) and "old" programs (as zone names and
X offsets).
X
X* To handle places where more than two time zone abbreviations are used,
X the functions "localtime" and "gmtime" set tzname[tmp->tm_isdst]
X (where "tmp" is the value the function returns) to the time zone
X abbreviation to be used. This differs from SVR2, where the elements
X of tzname are only changed as a result of calls to tzset.
X
X* Since the "TZ" environment variable can now be used to control time
X conversion, the "daylight" and "timezone" variables are no longer
X needed or supported. (You can use a compile-time option to cause
X these variables to be defined and to be set by "tzset"; however, their
X values will not be used by "localtime.")
X
X* The "localtime" function has been set up to deliver correct results
X for near-minimum or near-maximum time_t values. (A comment in the
X source code tells how to get compatibly wrong results).
X
X* A function "tzsetwall" has been added to arrange for the system's
X best approximation to local wall clock time to be delivered by
X subsequent calls to "localtime." Source code for portable
X applications that "must" run on local wall clock time should call
X "tzsetwall();" if such code is moved to "old" systems that don't provide
X tzsetwall, you won't be able to generate an executable program.
X (These time zone functions also arrange for local wall clock time to be
X used if tzset is called--directly or indirectly--and there's no "TZ"
X environment variable; portable applications should not, however, rely
X on this behavior since it's not the way SVR2 systems behave.)
X
XPoints of interest to folks with Version 7 or BSD systems:
X
X* The BSD "timezone" function is not present in this package;
X it's impossible to reliably map timezone's arguments (a "minutes west
X of GMT" value and a "daylight saving time in effect" flag) to a
X time zone abbreviation, and we refuse to guess.
X Programs that in the past used the timezone function may now examine
X tzname[localtime(&clock)->tm_isdst] to learn the correct time
X zone abbreviation to use. Alternatively, use localtime(&clock)->tm_zone
X if this has been enabled.
X
X* The BSD gettimeofday function is not used in this package;
X this lets users control the time zone used in doing time conversions.
X Users who don't try to control things (that is, users who do not set
X the environment variable TZ) get the time conversion specified in the
X file "/etc/zoneinfo/localtime"; see the time zone compiler writeup for
X information on how to initialize this file.
X
X* The BSD "dysize" function is only included if the preprocessor symbol
X BSD_COMPAT is defined. For a year y, the BSD code returns the value
X ((y % 4) == 0) : 366 : 365
X while this code returns the value
X (((y) % 4) == 0 && ((y) % 100) != 0 || ((y) % 400) == 0) ? 366 : 365
X There's a comment in the code telling how to get the BSD value.
X
XThe functions that are conditionally compiled if STD_INSPIRED is defined should,
Xat this point, be looked on primarily as food for thought. They are not in
Xany sense "standard compatible"--some are not, in fact, specified in *any*
Xstandard. They do, however, represent responses of various authors to
Xstandardization proposals.
X
XOther time conversion proposals, in particular the one developed by folks at
XHewlett Packard, offer a wider selection of functions that provide capabilities
Xbeyond those provided here. The absence of such functions from this package
Xis not meant to discourage the development, standardization, or use of such
Xfunctions. Rather, their absence reflects the decision to make this package
Xclose to SVR2 (with the exceptions outlined above) to ensure its broad
Xacceptability. If more powerful time conversion functions can be standardized,
Xso much the better.
X
XIt's probably not wise to standardize everything in this package.
XWhile the command
X nroff -man newctime.3
Xproduces a document that describes this package, the command
X nroff -man -rX3J11 newctime.3
Xproduces a document that describes the "standardizable" parts.
END-of-Theory
echo x - asia
sed 's/^X//' >asia << 'END-of-asia'
X# @(#)asia 3.1
X# Incorporates data for Singapore from Robert Elz' asia 1.1
X# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
XZone Japan 9:00 - JST
XZone Singapore 8:00 - SST
END-of-asia
echo x - australasia
sed 's/^X//' >australasia << 'END-of-australasia'
X# @(#)australasia 3.1
X# Incorporates updates for Australia from Robert Elz' australia 1.1
X# and further updates from the Australian consulate.
X
X# Australian Data (for states with DST), standard rules
X# Includes shift in 1987 to follow Vic/NSW rules for ending DST,
X# and shift in 1986 to start DST earlier.
X
X# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
XRule Oz 1971 1985 - Oct lastSun 2:00 1:00 -
XRule Oz 1986 max - Oct Sun<=24 2:00 1:00 -
XRule Oz 1972 only - Feb 27 3:00 0 -
XRule Oz 1973 1986 - Mar Sun>=1 3:00 0 -
XRule Oz 1987 max - Mar Sun<=21 3:00 0 -
X
X# Zone NAME GMTOFF RULES FORMAT [UNTIL]
XZone Australia/Tasmania 10:00 Oz EST
XZone Australia/Queensland 10:00 - EST # No DST here
XZone Australia/North 9:30 - CST # No DST here
XZone Australia/West 8:00 - WST # No DST here
XZone Australia/South 9:30 Oz CST
X
X# Victoria and New South Wales made the jump to a later ending date for
X# DST in 1986 rather than 1987. New South Wales also had another variation
X# in 1983, but the details of that are unknown to the authors at this time.
X
XZone Australia/Victoria 10:00 Oz EST 1985 Oct lastSun 2:00
X 10:00 1:00 EST 1986 Mar Sun<=21 3:00
X 10:00 Oz EST
XLink Australia/Victoria Australia/NSW
X
X# New Zealand, from Elz' asia 1.1
X# Elz says "no guarantees"
X# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
XRule NZ 1974 max - Oct lastSun 2:00 1:00 D
XRule NZ 1975 max - Mar Sun>=1 3:00 0 S
X
X# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
XZone NZ 12:00 NZ NZ%sT # New Zealand
X
X#
X# A footnote here:
X#
X# . . .
X# Date: Thu, j19 Feb 87 12:02:17 EST
X# From: Bradley White <seismo!k.cs.cmu.edu!bww>
X# . . .
X# I am including a description of Australian time zones. . .
X# this stuff is definitely accurate.
X# . . .
X# a) Australian Eastern Time: (EST = GMT+10:00, EDT = GMT+11:00)
X# . . .
X# Summer of 86/87 - present (current legislation):
X# third Sun Oct 02:00 EST -> third LSun Mar 02:00 EST
X#
X# If this turns out to be true, substitute Sun<=21 (third Sunday in October)
X# for Sun<=24 (next-to-last Sunday in October) above. . .some time before
X# October 1988, the first time it makes a difference.
X#
END-of-australasia
echo x - etcetera
sed 's/^X//' >etcetera << 'END-of-etcetera'
X# @(#)etcetera 3.1
X
XZone GMT 0 - GMT
X
X#
X# Names for zones that might exist, just so people can set a timezone
X# that's right for their area, even if it doesn't have a name or dst rules
X# (half hour zones are too much to bother with -- when someone asks!)
X#
X
XZone GMT-12 -12 - GMT-1200
XZone GMT-11 -11 - GMT-1100
XZone GMT-10 -10 - GMT-1000
XZone GMT-9 -9 - GMT-0900
XZone GMT-8 -8 - GMT-0800
XZone GMT-7 -7 - GMT-0700
XZone GMT-6 -6 - GMT-0600
XZone GMT-5 -5 - GMT-0500
XZone GMT-4 -4 - GMT-0400
XZone GMT-3 -3 - GMT-0300
XZone GMT-2 -2 - GMT-0200
XZone GMT-1 -1 - GMT-0100
XZone GMT+1 1 - GMT+0100
XZone GMT+2 2 - GMT+0200
XZone GMT+3 3 - GMT+0300
XZone GMT+4 4 - GMT+0400
XZone GMT+5 5 - GMT+0500
XZone GMT+6 6 - GMT+0600
XZone GMT+7 7 - GMT+0700
XZone GMT+8 8 - GMT+0800
XZone GMT+9 9 - GMT+0900
XZone GMT+10 10 - GMT+1000
XZone GMT+11 11 - GMT+1100
XZone GMT+12 12 - GMT+1200
XZone GMT+13 13 - GMT+1300 # GMT+12 with DST
X
XLink GMT UTC
XLink GMT UCT
XLink GMT Universal
XLink GMT Greenwich
END-of-etcetera
echo x - europe
sed 's/^X//' >europe << 'END-of-europe'
X# @(#)europe 3.1
X
X# Europe, updated from 4.3BSD and various contributors
X# International country codes are used to identify countries' rules and
X# zones
X#
X# This data is by no means authoritative; if you think you know better, go
X# ahead and edit the file (and please send any changes to seismo!elsie!tz
X# for general use in the future). The use of 1986 as starting years below
X# is conservative.
X#
X# One source shows that Bulgaria, Cyprus, Finland, and Greece observe DST from
X# the last Sunday in March to the last Sunday in September in 1986.
X# The source shows Romania changing a day later than everybody else.
X#
X# According to Bernard Sieloff's source, Poland is in the MET time zone but
X# uses the WE DST rules. The Western USSR uses EET+1 and ME DST rules.
X# Bernard Sieloff's source claims Romania switches on the same day, but at
X# 00:00 standard time (i.e., 01:00 DST). It also claims that Turkey
X# switches on the same day, but switches on at 01:00 standard time
X# and off at 00:00 standard time (i.e., 01:00 DST)
X
X# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
XRule GB-Eire 1986 max - Mar lastSun 1:00s 1:00 BST
XRule GB-Eire 1986 max - Oct lastSun 1:00s 0 GMT
X
XRule W-Eur 1986 max - Mar lastSun 1:00s 1:00 " DST"
XRule W-Eur 1986 max - Sep lastSun 1:00s 0 -
X
XRule M-Eur 1986 max - Mar lastSun 2:00s 1:00 " DST"
XRule M-Eur 1986 max - Sep lastSun 2:00s 0 -
X
XRule E-Eur 1986 max - Mar lastSun 3:00s 1:00 " DST"
XRule E-Eur 1986 max - Sep lastSun 3:00s 0 -
X
XRule Turkey 1986 max - Mar lastSun 1:00 1:00 " DST"
XRule Turkey 1986 max - Sep lastSun 1:00 0 -
X
XRule W-SU 1986 max - Mar lastSun 2:00s 1:00 " DST"
XRule W-SU 1986 max - Sep lastSun 2:00s 0 -
X
X# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
XZone GB-Eire 0:00 GB-Eire %s
XZone WET 0:00 W-Eur WET%s
XZone Iceland 0:00 - WET
XZone MET 1:00 M-Eur MET%s
XZone Poland 1:00 W-Eur MET%s
XZone EET 2:00 E-Eur EET%s
XZone Turkey 3:00 Turkey EET%s
XZone W-SU 3:00 M-Eur ????
X
X# Tom Hoffman says that MET is also known as Central European Time
X
XLink MET CET
X
X#
X# And now, letters on the subject. . .
X#
X###############################################################################
X#
X# ...
X# Date: Wed, 28 Jan 87 16:56:27 -0100
X# From: seismo!mcvax!cgcha!wtho (Tom Hofmann)
X# Message-Id: <8701281556.AA22174@cgcha.uucp>
X# ...
X# Subject: Time zone handling
X# ...
X#
X# ...the European time rules are...standardized since 1981, when
X# most European counrties started DST. Before that year, only
X# a few countries (UK, France, Italy) had DST, each according
X# to own national rules. In 1981, however, DST started on
X# 'Apr firstSun', and not on 'Mar lastSun' as in the following
X# years...
X# But also since 1981 there are some more national exceptions
X# than listed in 'europe': Switzerland, for example, joined DST
X# one year later, Denmark ended DST on 'Oct 1' instead of 'Sep
X# lastSun' in 1981---I don't know how they handle now.
X#
X# Finally, DST ist always from 'Apr 1' to 'Oct 1' in the
X# Soviet Union (as far as I know).
X#
X# Tom Hofmann, Scientific Computer Center, CIBA-GEIGY AG,
X# 4002 Basle, Switzerland
X# UUCP: ...!mcvax!cernvax!cgcha!wtho
X#
X###############################################################################
X#
X# ...
X# Date: Wed, 4 Feb 87 22:35:22 +0100
X# From: seismo!mcvax!cwi.nl!dik (Dik T. Winter)
X# Message-Id: <8702042135.AA23919@zuring.cwi.nl>
X# ...
X# Subject: timezones
X# ...
X#
X# The information from Tom Hofmann is (as far as I know) not entirely correct.
X# After a request from chongo at amdahl I tried to retrieve all information
X# about DST in Europe. I was able to find all from about 1969.
X#
X# ...standardization
X# on DST in Europe started in about 1977 with switches on first Sunday in
X# April and last Sunday in September. In UK it was from last but 1 Sunday
X# in march to last Sunday in October. In 1981 UK joined Europe insofar that
X# the starting day for both shifted to last Sunday in March. And from 1982
X# the whole of Europe used DST, with switch dates April 1 and October 1 in
X# the Sovjet Union. In 1985 the SU reverted to standard Europen switch
X# dates. Note that currently in the UK the switch back date appears not
X# to be the last Sunday in October, but 4 weeks after the last Sunday in
X# September (withness 1982 and 1983 with terminating days October 24 and 23).
X#
X# It should also be remembered that time-zones are not constants; e.g.
X# Portugal switched in 1976 from MET (or CET) to WET with DST, and the UK
X# used MET throughout from 1967 to 1969, and WET with DST before and after
X# that time. Note also that though there were rules for switch dates not
X# all countries abided to these dates, and many individual deviations
X# occurred, though not since 1982 I believe. Another note: it is always
X# assumed that DST is 1 hour ahead of normal time, this need not be the
X# case; at least in the Netherlands there have been times when DST was 2 hours
X# in advance of normal time.
X#
X# ...
X# dik t. winter, cwi, amsterdam, nederland
X# INTERNET : dik@cwi.nl
X# BITNET/EARN: dik@mcvax
END-of-europe
echo x - ialloc.c
sed 's/^X//' >ialloc.c << 'END-of-ialloc.c'
X/*
X * @(#)ialloc.c 1.1 ialloc.c 3/4/87
X */
X
X/*LINTLIBRARY*/
X
X#include "stdio.h"
X
X#ifndef alloc_t
X#define alloc_t unsigned
X#endif /* !alloc_t */
X
X#ifdef MAL
X#define NULLMAL(x) ((x) == NULL || (x) == MAL)
X#else /* !MAL */
X#define NULLMAL(x) ((x) == NULL)
X#endif /* !MAL */
X
Xextern char * calloc();
Xextern char * malloc();
Xextern char * realloc();
Xextern char * strcpy();
X
Xchar *
Ximalloc(n)
X{
X#ifdef MAL
X register char * result;
X
X if (n == 0)
X n = 1;
X result = malloc((alloc_t) n);
X return (result == MAL) ? NULL : result;
X#else /* !MAL */
X if (n == 0)
X n = 1;
X return malloc((alloc_t) n);
X#endif /* !MAL */
X}
X
Xchar *
Xicalloc(nelem, elsize)
X{
X if (nelem == 0 || elsize == 0)
X nelem = elsize = 1;
X return calloc((alloc_t) nelem, (alloc_t) elsize);
X}
X
Xchar *
Xirealloc(pointer, size)
Xchar * pointer;
X{
X if (NULLMAL(pointer))
X return imalloc(size);
X if (size == 0)
X size = 1;
X return realloc(pointer, (alloc_t) size);
X}
X
Xchar *
Xicatalloc(old, new)
Xchar * old;
Xchar * new;
X{
X register char * result;
X register oldsize, newsize;
X
X oldsize = NULLMAL(old) ? 0 : strlen(old);
X newsize = NULLMAL(new) ? 0 : strlen(new);
X if ((result = irealloc(old, oldsize + newsize + 1)) != NULL)
X if (!NULLMAL(new))
X (void) strcpy(result + oldsize, new);
X return result;
X}
X
Xchar *
Xicpyalloc(string)
Xchar * string;
X{
X return icatalloc((char *) NULL, string);
X}
X
Xifree(p)
Xchar * p;
X{
X if (!NULLMAL(p))
X free(p);
X}
END-of-ialloc.c
echo x - northamerica
sed 's/^X//' >northamerica << 'END-of-northamerica'
X# @(#)northamerica 3.1
X
X# Despite the performance of existing (4.[123]BSD, System V Release 2.0) code,
X# US Daylight Saving Time ended on the last Sunday of *October* in 1974.
X# See, for example, the front page of the Saturday, October 26, 1974
X# and Sunday, October 27, 1974 editions of the Washington Post.
X
X# Note also this from seismo!munnari!kre:
X# "I recall also being told by someone once that Canada didn't have
X# the DST variations in 74/75 that the US did, but I am not nearly
X# sure enough of this to add anything."
X# The above has been confirmed by Bob Devine; we'll go with it here.
X
X# Before the Uniform Time Act of 1966 took effect in 1967, observance of
X# Daylight Saving Time in the US was by local option, except during wartime.
X
X# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
XRule US 1918 1919 - Mar lastSun 2:00 1:00 D
XRule US 1918 1919 - Oct lastSun 2:00 0 S
XRule US 1942 only - Feb 9 2:00 1:00 W # War
XRule US 1945 only - Sep 30 2:00 0 S
XRule US 1967 max - Oct lastSun 2:00 0 S
XRule US 1967 1973 - Apr lastSun 2:00 1:00 D
XRule US 1974 only - Jan 6 2:00 1:00 D
XRule US 1975 only - Feb 23 2:00 1:00 D
XRule US 1976 1986 - Apr lastSun 2:00 1:00 D
XRule US 1987 max - Apr Sun>=1 2:00 1:00 D
X
X###############################################################################
X
X# New names
X
X# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
XZone US/Eastern -5:00 US E%sT
XZone US/Central -6:00 US C%sT
XZone US/Mountain -7:00 US M%sT
XZone US/Pacific -8:00 US P%sT
XZone US/Yukon -9:00 US Y%sT
X
X# Mainland US areas that are always Standard as of 1986.
X
XZone US/East-Indiana -5:00 US E%sT 1946
X -5:00 - EST # Always EST as of 1986
XZone US/Arizona -7:00 US M%sT 1946
X -7:00 - MST # Always MST as of 1986
X
X# And then there's Hawaii.
X# DST was observed for one day in 1933;
X# Standard time was change by half an hour in 1947;
X# it's always standard as of 1986.
X
XZone US/Hawaii -10:30 US H%sT 1933 Apr 30 2:00
X -10:30 1:00 HDT 1933 May 1 2:00
X -10:30 US H%sT 1947 Jun 8 2:00
X -10:00 - HST
X
X# Old names, for S5 users
X
X# Link LINK-FROM LINK-TO
XLink US/Eastern EST5EDT
XLink US/Central CST6CDT
XLink US/Mountain MST7MDT
XLink US/Pacific PST8PDT
XLink US/East-Indiana EST
XLink US/Arizona MST
XLink US/Hawaii HST
X
X################################################################################
X
X# Canada is reportedly lots easier than the US--leastways since 1951.
X# I don't know what they did before then.
X# 4.3BSD claims that it's perfectly regular.
X# According to a posting in "comp.bugs.misc", "comp.unix.wizards", etc.
X# on February 8, 1987, by Dave Sherman of the Law Society of Upper Canada,
X# "...Canada (well, Ontario and at least some of the other provinces) are
X# adopting the new daylight savings time rules...". We assume all of
X# Canada is doing so.
X
X# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
XRule Canada 1969 max - Oct lastSun 2:00 0 S
XRule Canada 1969 1986 - Apr lastSun 2:00 1:00 D
XRule Canada 1987 max - Apr Sun>=1 2:00 1:00 D
X
X# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
X# Bob Devine says that DST *is* observed in Newfoundland
XZone Canada/Newfoundland -3:30 Canada N%sT
XZone Canada/Atlantic -4:00 Canada A%sT
XZone Canada/Eastern -5:00 Canada E%sT
XZone Canada/Central -6:00 Canada C%sT
XZone Canada/Mountain -7:00 Canada M%sT
XZone Canada/Pacific -8:00 Canada P%sT
XZone Canada/Yukon -9:00 Canada Y%sT
X
X################################################################################
X
X# ?Mexico? !Quien sabe!
END-of-northamerica
echo x - pacificnew
sed 's/^X//' >pacificnew << 'END-of-pacificnew'
X# @(#)pacificnew 3.1
X
X# "Pacific Presidential Election Time" has been contemplated by the US Congress
X
X# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
XRule Twilite 1987 max - Apr Sun>=1 2:00 1:00 D
XRule Twilite 1987 max uspres Oct lastSun 2:00 1:00 PE
XRule Twilite 1987 max uspres Nov Sun>=7 2:00 0 S
XRule Twilite 1987 max nonpres Oct lastSun 2:00 0 S
X
X# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
XZone US/Pacific-New -8:00 US P%sT 1987
X -8:00 Twilite P%sT
END-of-pacificnew
echo x - scheck.c
sed 's/^X//' >scheck.c << 'END-of-scheck.c'
X/*
X * @(#)scheck.c 1.1 scheck.c 3/4/87
X */
X
X/*LINTLIBRARY*/
X
X#include "stdio.h"
X#include "ctype.h"
X
Xextern char * imalloc();
X
Xchar *
Xscheck(string, format)
Xchar * string;
Xchar * format;
X{
X register char * fbuf;
X register char * fp;
X register char * tp;
X register int c;
X register char * result;
X char dummy;
X
X result = "";
X if (string == NULL || format == NULL)
X return result;
X fbuf = imalloc(2 * strlen(format) + 4);
X if (fbuf == NULL)
X return result;
X fp = format;
X tp = fbuf;
X while ((*tp++ = c = *fp++) != '\0') {
X if (c != '%')
X continue;
X if (*fp == '%') {
X *tp++ = *fp++;
X continue;
X }
X *tp++ = '*';
X if (*fp == '*')
X ++fp;
X while (isascii(*fp) && isdigit(*fp))
X *tp++ = *fp++;
X if (*fp == 'l' || *fp == 'h')
X *tp++ = *fp++;
X else if (*fp == '[')
X do *tp++ = *fp++;
X while (*fp != '\0' && *fp != ']');
X if ((*tp++ = *fp++) == '\0')
X break;
X }
X *(tp - 1) = '%';
X *tp++ = 'c';
X *tp = '\0';
X if (sscanf(string, fbuf, &dummy) != 1)
X result = format;
X free(fbuf);
X return result;
X}
END-of-scheck.c
echo x - solar87
sed 's/^X//' >solar87 << 'END-of-solar87'
X# @(#)solar87 3.1
X
X# So much for footnotes about Saudi Arabia.
X# Apparent noon times below are for Riyadh; your mileage will vary.
X# Times were computed using formulas in the U.S. Naval Observatory's
X# Almanac for Computers 1987; the formulas "will give EqT to an accuracy of
X# [plus or minus] two seconds during the current year."
X#
X# Rounding to the nearest five seconds results in fewer than
X# 256 different "time types"--a limit that's faced because time types are
X# stored on disk as unsigned chars.
X
X# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
XRule sol87 1987 only - Jan 1 12:03:20s -0:03:20 -
XRule sol87 1987 only - Jan 2 12:03:50s -0:03:50 -
XRule sol87 1987 only - Jan 3 12:04:15s -0:04:15 -
XRule sol87 1987 only - Jan 4 12:04:45s -0:04:45 -
XRule sol87 1987 only - Jan 5 12:05:10s -0:05:10 -
XRule sol87 1987 only - Jan 6 12:05:40s -0:05:40 -
XRule sol87 1987 only - Jan 7 12:06:05s -0:06:05 -
XRule sol87 1987 only - Jan 8 12:06:30s -0:06:30 -
XRule sol87 1987 only - Jan 9 12:06:55s -0:06:55 -
XRule sol87 1987 only - Jan 10 12:07:20s -0:07:20 -
XRule sol87 1987 only - Jan 11 12:07:45s -0:07:45 -
XRule sol87 1987 only - Jan 12 12:08:10s -0:08:10 -
XRule sol87 1987 only - Jan 13 12:08:30s -0:08:30 -
XRule sol87 1987 only - Jan 14 12:08:55s -0:08:55 -
XRule sol87 1987 only - Jan 15 12:09:15s -0:09:15 -
XRule sol87 1987 only - Jan 16 12:09:35s -0:09:35 -
XRule sol87 1987 only - Jan 17 12:09:55s -0:09:55 -
XRule sol87 1987 only - Jan 18 12:10:15s -0:10:15 -
XRule sol87 1987 only - Jan 19 12:10:35s -0:10:35 -
XRule sol87 1987 only - Jan 20 12:10:55s -0:10:55 -
XRule sol87 1987 only - Jan 21 12:11:10s -0:11:10 -
XRule sol87 1987 only - Jan 22 12:11:30s -0:11:30 -
XRule sol87 1987 only - Jan 23 12:11:45s -0:11:45 -
XRule sol87 1987 only - Jan 24 12:12:00s -0:12:00 -
XRule sol87 1987 only - Jan 25 12:12:15s -0:12:15 -
XRule sol87 1987 only - Jan 26 12:12:30s -0:12:30 -
XRule sol87 1987 only - Jan 27 12:12:40s -0:12:40 -
XRule sol87 1987 only - Jan 28 12:12:55s -0:12:55 -
XRule sol87 1987 only - Jan 29 12:13:05s -0:13:05 -
XRule sol87 1987 only - Jan 30 12:13:15s -0:13:15 -
XRule sol87 1987 only - Jan 31 12:13:25s -0:13:25 -
XRule sol87 1987 only - Feb 1 12:13:35s -0:13:35 -
XRule sol87 1987 only - Feb 2 12:13:40s -0:13:40 -
XRule sol87 1987 only - Feb 3 12:13:50s -0:13:50 -
XRule sol87 1987 only - Feb 4 12:13:55s -0:13:55 -
XRule sol87 1987 only - Feb 5 12:14:00s -0:14:00 -
XRule sol87 1987 only - Feb 6 12:14:05s -0:14:05 -
XRule sol87 1987 only - Feb 7 12:14:10s -0:14:10 -
XRule sol87 1987 only - Feb 8 12:14:10s -0:14:10 -
XRule sol87 1987 only - Feb 9 12:14:15s -0:14:15 -
XRule sol87 1987 only - Feb 10 12:14:15s -0:14:15 -
XRule sol87 1987 only - Feb 11 12:14:15s -0:14:15 -
XRule sol87 1987 only - Feb 12 12:14:15s -0:14:15 -
XRule sol87 1987 only - Feb 13 12:14:15s -0:14:15 -
XRule sol87 1987 only - Feb 14 12:14:15s -0:14:15 -
XRule sol87 1987 only - Feb 15 12:14:10s -0:14:10 -
XRule sol87 1987 only - Feb 16 12:14:10s -0:14:10 -
XRule sol87 1987 only - Feb 17 12:14:05s -0:14:05 -
XRule sol87 1987 only - Feb 18 12:14:00s -0:14:00 -
XRule sol87 1987 only - Feb 19 12:13:55s -0:13:55 -
XRule sol87 1987 only - Feb 20 12:13:50s -0:13:50 -
XRule sol87 1987 only - Feb 21 12:13:45s -0:13:45 -
XRule sol87 1987 only - Feb 22 12:13:35s -0:13:35 -
XRule sol87 1987 only - Feb 23 12:13:30s -0:13:30 -
XRule sol87 1987 only - Feb 24 12:13:20s -0:13:20 -
XRule sol87 1987 only - Feb 25 12:13:10s -0:13:10 -
XRule sol87 1987 only - Feb 26 12:13:00s -0:13:00 -
XRule sol87 1987 only - Feb 27 12:12:50s -0:12:50 -
XRule sol87 1987 only - Feb 28 12:12:40s -0:12:40 -
XRule sol87 1987 only - Mar 1 12:12:30s -0:12:30 -
XRule sol87 1987 only - Mar 2 12:12:20s -0:12:20 -
XRule sol87 1987 only - Mar 3 12:12:05s -0:12:05 -
XRule sol87 1987 only - Mar 4 12:11:55s -0:11:55 -
XRule sol87 1987 only - Mar 5 12:11:40s -0:11:40 -
XRule sol87 1987 only - Mar 6 12:11:25s -0:11:25 -
XRule sol87 1987 only - Mar 7 12:11:15s -0:11:15 -
XRule sol87 1987 only - Mar 8 12:11:00s -0:11:00 -
XRule sol87 1987 only - Mar 9 12:10:45s -0:10:45 -
XRule sol87 1987 only - Mar 10 12:10:30s -0:10:30 -
XRule sol87 1987 only - Mar 11 12:10:15s -0:10:15 -
XRule sol87 1987 only - Mar 12 12:09:55s -0:09:55 -
XRule sol87 1987 only - Mar 13 12:09:40s -0:09:40 -
XRule sol87 1987 only - Mar 14 12:09:25s -0:09:25 -
XRule sol87 1987 only - Mar 15 12:09:10s -0:09:10 -
XRule sol87 1987 only - Mar 16 12:08:50s -0:08:50 -
XRule sol87 1987 only - Mar 17 12:08:35s -0:08:35 -
XRule sol87 1987 only - Mar 18 12:08:15s -0:08:15 -
XRule sol87 1987 only - Mar 19 12:08:00s -0:08:00 -
XRule sol87 1987 only - Mar 20 12:07:40s -0:07:40 -
XRule sol87 1987 only - Mar 21 12:07:25s -0:07:25 -
XRule sol87 1987 only - Mar 22 12:07:05s -0:07:05 -
XRule sol87 1987 only - Mar 23 12:06:50s -0:06:50 -
XRule sol87 1987 only - Mar 24 12:06:30s -0:06:30 -
XRule sol87 1987 only - Mar 25 12:06:10s -0:06:10 -
XRule sol87 1987 only - Mar 26 12:05:55s -0:05:55 -
XRule sol87 1987 only - Mar 27 12:05:35s -0:05:35 -
XRule sol87 1987 only - Mar 28 12:05:15s -0:05:15 -
XRule sol87 1987 only - Mar 29 12:05:00s -0:05:00 -
XRule sol87 1987 only - Mar 30 12:04:40s -0:04:40 -
XRule sol87 1987 only - Mar 31 12:04:25s -0:04:25 -
XRule sol87 1987 only - Apr 1 12:04:05s -0:04:05 -
XRule sol87 1987 only - Apr 2 12:03:45s -0:03:45 -
XRule sol87 1987 only - Apr 3 12:03:30s -0:03:30 -
XRule sol87 1987 only - Apr 4 12:03:10s -0:03:10 -
XRule sol87 1987 only - Apr 5 12:02:55s -0:02:55 -
XRule sol87 1987 only - Apr 6 12:02:35s -0:02:35 -
XRule sol87 1987 only - Apr 7 12:02:20s -0:02:20 -
XRule sol87 1987 only - Apr 8 12:02:05s -0:02:05 -
XRule sol87 1987 only - Apr 9 12:01:45s -0:01:45 -
XRule sol87 1987 only - Apr 10 12:01:30s -0:01:30 -
XRule sol87 1987 only - Apr 11 12:01:15s -0:01:15 -
XRule sol87 1987 only - Apr 12 12:00:55s -0:00:55 -
XRule sol87 1987 only - Apr 13 12:00:40s -0:00:40 -
XRule sol87 1987 only - Apr 14 12:00:25s -0:00:25 -
XRule sol87 1987 only - Apr 15 12:00:10s -0:00:10 -
XRule sol87 1987 only - Apr 16 11:59:55s 0:00:05 -
XRule sol87 1987 only - Apr 17 11:59:45s 0:00:15 -
XRule sol87 1987 only - Apr 18 11:59:30s 0:00:30 -
XRule sol87 1987 only - Apr 19 11:59:15s 0:00:45 -
XRule sol87 1987 only - Apr 20 11:59:05s 0:00:55 -
XRule sol87 1987 only - Apr 21 11:58:50s 0:01:10 -
XRule sol87 1987 only - Apr 22 11:58:40s 0:01:20 -
XRule sol87 1987 only - Apr 23 11:58:25s 0:01:35 -
XRule sol87 1987 only - Apr 24 11:58:15s 0:01:45 -
XRule sol87 1987 only - Apr 25 11:58:05s 0:01:55 -
XRule sol87 1987 only - Apr 26 11:57:55s 0:02:05 -
XRule sol87 1987 only - Apr 27 11:57:45s 0:02:15 -
XRule sol87 1987 only - Apr 28 11:57:35s 0:02:25 -
XRule sol87 1987 only - Apr 29 11:57:25s 0:02:35 -
XRule sol87 1987 only - Apr 30 11:57:15s 0:02:45 -
XRule sol87 1987 only - May 1 11:57:10s 0:02:50 -
XRule sol87 1987 only - May 2 11:57:00s 0:03:00 -
XRule sol87 1987 only - May 3 11:56:55s 0:03:05 -
XRule sol87 1987 only - May 4 11:56:50s 0:03:10 -
XRule sol87 1987 only - May 5 11:56:45s 0:03:15 -
XRule sol87 1987 only - May 6 11:56:40s 0:03:20 -
XRule sol87 1987 only - May 7 11:56:35s 0:03:25 -
XRule sol87 1987 only - May 8 11:56:30s 0:03:30 -
XRule sol87 1987 only - May 9 11:56:25s 0:03:35 -
XRule sol87 1987 only - May 10 11:56:25s 0:03:35 -
XRule sol87 1987 only - May 11 11:56:20s 0:03:40 -
XRule sol87 1987 only - May 12 11:56:20s 0:03:40 -
XRule sol87 1987 only - May 13 11:56:20s 0:03:40 -
XRule sol87 1987 only - May 14 11:56:20s 0:03:40 -
XRule sol87 1987 only - May 15 11:56:20s 0:03:40 -
XRule sol87 1987 only - May 16 11:56:20s 0:03:40 -
XRule sol87 1987 only - May 17 11:56:20s 0:03:40 -
XRule sol87 1987 only - May 18 11:56:20s 0:03:40 -
XRule sol87 1987 only - May 19 11:56:25s 0:03:35 -
XRule sol87 1987 only - May 20 11:56:25s 0:03:35 -
XRule sol87 1987 only - May 21 11:56:30s 0:03:30 -
XRule sol87 1987 only - May 22 11:56:35s 0:03:25 -
XRule sol87 1987 only - May 23 11:56:40s 0:03:20 -
XRule sol87 1987 only - May 24 11:56:45s 0:03:15 -
XRule sol87 1987 only - May 25 11:56:50s 0:03:10 -
XRule sol87 1987 only - May 26 11:56:55s 0:03:05 -
XRule sol87 1987 only - May 27 11:57:00s 0:03:00 -
XRule sol87 1987 only - May 28 11:57:10s 0:02:50 -
XRule sol87 1987 only - May 29 11:57:15s 0:02:45 -
XRule sol87 1987 only - May 30 11:57:25s 0:02:35 -
XRule sol87 1987 only - May 31 11:57:30s 0:02:30 -
XRule sol87 1987 only - Jun 1 11:57:40s 0:02:20 -
XRule sol87 1987 only - Jun 2 11:57:50s 0:02:10 -
XRule sol87 1987 only - Jun 3 11:58:00s 0:02:00 -
XRule sol87 1987 only - Jun 4 11:58:10s 0:01:50 -
XRule sol87 1987 only - Jun 5 11:58:20s 0:01:40 -
XRule sol87 1987 only - Jun 6 11:58:30s 0:01:30 -
XRule sol87 1987 only - Jun 7 11:58:40s 0:01:20 -
XRule sol87 1987 only - Jun 8 11:58:50s 0:01:10 -
XRule sol87 1987 only - Jun 9 11:59:05s 0:00:55 -
XRule sol87 1987 only - Jun 10 11:59:15s 0:00:45 -
XRule sol87 1987 only - Jun 11 11:59:30s 0:00:30 -
XRule sol87 1987 only - Jun 12 11:59:40s 0:00:20 -
XRule sol87 1987 only - Jun 13 11:59:50s 0:00:10 -
XRule sol87 1987 only - Jun 14 12:00:05s -0:00:05 -
XRule sol87 1987 only - Jun 15 12:00:15s -0:00:15 -
XRule sol87 1987 only - Jun 16 12:00:30s -0:00:30 -
XRule sol87 1987 only - Jun 17 12:00:45s -0:00:45 -
XRule sol87 1987 only - Jun 18 12:00:55s -0:00:55 -
XRule sol87 1987 only - Jun 19 12:01:10s -0:01:10 -
XRule sol87 1987 only - Jun 20 12:01:20s -0:01:20 -
XRule sol87 1987 only - Jun 21 12:01:35s -0:01:35 -
XRule sol87 1987 only - Jun 22 12:01:50s -0:01:50 -
XRule sol87 1987 only - Jun 23 12:02:00s -0:02:00 -
XRule sol87 1987 only - Jun 24 12:02:15s -0:02:15 -
XRule sol87 1987 only - Jun 25 12:02:25s -0:02:25 -
XRule sol87 1987 only - Jun 26 12:02:40s -0:02:40 -
XRule sol87 1987 only - Jun 27 12:02:50s -0:02:50 -
XRule sol87 1987 only - Jun 28 12:03:05s -0:03:05 -
XRule sol87 1987 only - Jun 29 12:03:15s -0:03:15 -
XRule sol87 1987 only - Jun 30 12:03:30s -0:03:30 -
XRule sol87 1987 only - Jul 1 12:03:40s -0:03:40 -
XRule sol87 1987 only - Jul 2 12:03:50s -0:03:50 -
XRule sol87 1987 only - Jul 3 12:04:05s -0:04:05 -
XRule sol87 1987 only - Jul 4 12:04:15s -0:04:15 -
XRule sol87 1987 only - Jul 5 12:04:25s -0:04:25 -
XRule sol87 1987 only - Jul 6 12:04:35s -0:04:35 -
XRule sol87 1987 only - Jul 7 12:04:45s -0:04:45 -
XRule sol87 1987 only - Jul 8 12:04:55s -0:04:55 -
XRule sol87 1987 only - Jul 9 12:05:05s -0:05:05 -
XRule sol87 1987 only - Jul 10 12:05:15s -0:05:15 -
XRule sol87 1987 only - Jul 11 12:05:20s -0:05:20 -
XRule sol87 1987 only - Jul 12 12:05:30s -0:05:30 -
XRule sol87 1987 only - Jul 13 12:05:40s -0:05:40 -
XRule sol87 1987 only - Jul 14 12:05:45s -0:05:45 -
XRule sol87 1987 only - Jul 15 12:05:50s -0:05:50 -
XRule sol87 1987 only - Jul 16 12:06:00s -0:06:00 -
XRule sol87 1987 only - Jul 17 12:06:05s -0:06:05 -
XRule sol87 1987 only - Jul 18 12:06:10s -0:06:10 -
XRule sol87 1987 only - Jul 19 12:06:15s -0:06:15 -
XRule sol87 1987 only - Jul 20 12:06:15s -0:06:15 -
XRule sol87 1987 only - Jul 21 12:06:20s -0:06:20 -
XRule sol87 1987 only - Jul 22 12:06:25s -0:06:25 -
XRule sol87 1987 only - Jul 23 12:06:25s -0:06:25 -
XRule sol87 1987 only - Jul 24 12:06:25s -0:06:25 -
XRule sol87 1987 only - Jul 25 12:06:30s -0:06:30 -
XRule sol87 1987 only - Jul 26 12:06:30s -0:06:30 -
XRule sol87 1987 only - Jul 27 12:06:30s -0:06:30 -
XRule sol87 1987 only - Jul 28 12:06:30s -0:06:30 -
XRule sol87 1987 only - Jul 29 12:06:25s -0:06:25 -
XRule sol87 1987 only - Jul 30 12:06:25s -0:06:25 -
XRule sol87 1987 only - Jul 31 12:06:25s -0:06:25 -
XRule sol87 1987 only - Aug 1 12:06:20s -0:06:20 -
XRule sol87 1987 only - Aug 2 12:06:15s -0:06:15 -
XRule sol87 1987 only - Aug 3 12:06:10s -0:06:10 -
XRule sol87 1987 only - Aug 4 12:06:05s -0:06:05 -
XRule sol87 1987 only - Aug 5 12:06:00s -0:06:00 -
XRule sol87 1987 only - Aug 6 12:05:55s -0:05:55 -
XRule sol87 1987 only - Aug 7 12:05:50s -0:05:50 -
XRule sol87 1987 only - Aug 8 12:05:40s -0:05:40 -
XRule sol87 1987 only - Aug 9 12:05:35s -0:05:35 -
XRule sol87 1987 only - Aug 10 12:05:25s -0:05:25 -
XRule sol87 1987 only - Aug 11 12:05:15s -0:05:15 -
XRule sol87 1987 only - Aug 12 12:05:05s -0:05:05 -
XRule sol87 1987 only - Aug 13 12:04:55s -0:04:55 -
XRule sol87 1987 only - Aug 14 12:04:45s -0:04:45 -
XRule sol87 1987 only - Aug 15 12:04:35s -0:04:35 -
XRule sol87 1987 only - Aug 16 12:04:25s -0:04:25 -
XRule sol87 1987 only - Aug 17 12:04:10s -0:04:10 -
XRule sol87 1987 only - Aug 18 12:04:00s -0:04:00 -
XRule sol87 1987 only - Aug 19 12:03:45s -0:03:45 -
XRule sol87 1987 only - Aug 20 12:03:30s -0:03:30 -
XRule sol87 1987 only - Aug 21 12:03:15s -0:03:15 -
XRule sol87 1987 only - Aug 22 12:03:00s -0:03:00 -
XRule sol87 1987 only - Aug 23 12:02:45s -0:02:45 -
XRule sol87 1987 only - Aug 24 12:02:30s -0:02:30 -
XRule sol87 1987 only - Aug 25 12:02:15s -0:02:15 -
XRule sol87 1987 only - Aug 26 12:02:00s -0:02:00 -
XRule sol87 1987 only - Aug 27 12:01:40s -0:01:40 -
XRule sol87 1987 only - Aug 28 12:01:25s -0:01:25 -
XRule sol87 1987 only - Aug 29 12:01:05s -0:01:05 -
XRule sol87 1987 only - Aug 30 12:00:50s -0:00:50 -
XRule sol87 1987 only - Aug 31 12:00:30s -0:00:30 -
XRule sol87 1987 only - Sep 1 12:00:10s -0:00:10 -
XRule sol87 1987 only - Sep 2 11:59:50s 0:00:10 -
XRule sol87 1987 only - Sep 3 11:59:35s 0:00:25 -
XRule sol87 1987 only - Sep 4 11:59:15s 0:00:45 -
XRule sol87 1987 only - Sep 5 11:58:55s 0:01:05 -
XRule sol87 1987 only - Sep 6 11:58:35s 0:01:25 -
XRule sol87 1987 only - Sep 7 11:58:15s 0:01:45 -
XRule sol87 1987 only - Sep 8 11:57:55s 0:02:05 -
XRule sol87 1987 only - Sep 9 11:57:30s 0:02:30 -
XRule sol87 1987 only - Sep 10 11:57:10s 0:02:50 -
XRule sol87 1987 only - Sep 11 11:56:50s 0:03:10 -
XRule sol87 1987 only - Sep 12 11:56:30s 0:03:30 -
XRule sol87 1987 only - Sep 13 11:56:10s 0:03:50 -
XRule sol87 1987 only - Sep 14 11:55:45s 0:04:15 -
XRule sol87 1987 only - Sep 15 11:55:25s 0:04:35 -
XRule sol87 1987 only - Sep 16 11:55:05s 0:04:55 -
XRule sol87 1987 only - Sep 17 11:54:45s 0:05:15 -
XRule sol87 1987 only - Sep 18 11:54:20s 0:05:40 -
XRule sol87 1987 only - Sep 19 11:54:00s 0:06:00 -
XRule sol87 1987 only - Sep 20 11:53:40s 0:06:20 -
XRule sol87 1987 only - Sep 21 11:53:15s 0:06:45 -
XRule sol87 1987 only - Sep 22 11:52:55s 0:07:05 -
XRule sol87 1987 only - Sep 23 11:52:35s 0:07:25 -
XRule sol87 1987 only - Sep 24 11:52:15s 0:07:45 -
XRule sol87 1987 only - Sep 25 11:51:55s 0:08:05 -
XRule sol87 1987 only - Sep 26 11:51:35s 0:08:25 -
XRule sol87 1987 only - Sep 27 11:51:10s 0:08:50 -
XRule sol87 1987 only - Sep 28 11:50:50s 0:09:10 -
XRule sol87 1987 only - Sep 29 11:50:30s 0:09:30 -
XRule sol87 1987 only - Sep 30 11:50:10s 0:09:50 -
XRule sol87 1987 only - Oct 1 11:49:50s 0:10:10 -
XRule sol87 1987 only - Oct 2 11:49:35s 0:10:25 -
XRule sol87 1987 only - Oct 3 11:49:15s 0:10:45 -
XRule sol87 1987 only - Oct 4 11:48:55s 0:11:05 -
XRule sol87 1987 only - Oct 5 11:48:35s 0:11:25 -
XRule sol87 1987 only - Oct 6 11:48:20s 0:11:40 -
XRule sol87 1987 only - Oct 7 11:48:00s 0:12:00 -
XRule sol87 1987 only - Oct 8 11:47:45s 0:12:15 -
XRule sol87 1987 only - Oct 9 11:47:25s 0:12:35 -
XRule sol87 1987 only - Oct 10 11:47:10s 0:12:50 -
XRule sol87 1987 only - Oct 11 11:46:55s 0:13:05 -
XRule sol87 1987 only - Oct 12 11:46:40s 0:13:20 -
XRule sol87 1987 only - Oct 13 11:46:25s 0:13:35 -
XRule sol87 1987 only - Oct 14 11:46:10s 0:13:50 -
XRule sol87 1987 only - Oct 15 11:45:55s 0:14:05 -
XRule sol87 1987 only - Oct 16 11:45:45s 0:14:15 -
XRule sol87 1987 only - Oct 17 11:45:30s 0:14:30 -
XRule sol87 1987 only - Oct 18 11:45:20s 0:14:40 -
XRule sol87 1987 only - Oct 19 11:45:05s 0:14:55 -
XRule sol87 1987 only - Oct 20 11:44:55s 0:15:05 -
XRule sol87 1987 only - Oct 21 11:44:45s 0:15:15 -
XRule sol87 1987 only - Oct 22 11:44:35s 0:15:25 -
XRule sol87 1987 only - Oct 23 11:44:25s 0:15:35 -
XRule sol87 1987 only - Oct 24 11:44:20s 0:15:40 -
XRule sol87 1987 only - Oct 25 11:44:10s 0:15:50 -
XRule sol87 1987 only - Oct 26 11:44:05s 0:15:55 -
XRule sol87 1987 only - Oct 27 11:43:55s 0:16:05 -
XRule sol87 1987 only - Oct 28 11:43:50s 0:16:10 -
XRule sol87 1987 only - Oct 29 11:43:45s 0:16:15 -
XRule sol87 1987 only - Oct 30 11:43:45s 0:16:15 -
XRule sol87 1987 only - Oct 31 11:43:40s 0:16:20 -
XRule sol87 1987 only - Nov 1 11:43:40s 0:16:20 -
XRule sol87 1987 only - Nov 2 11:43:35s 0:16:25 -
XRule sol87 1987 only - Nov 3 11:43:35s 0:16:25 -
XRule sol87 1987 only - Nov 4 11:43:35s 0:16:25 -
XRule sol87 1987 only - Nov 5 11:43:35s 0:16:25 -
XRule sol87 1987 only - Nov 6 11:43:40s 0:16:20 -
XRule sol87 1987 only - Nov 7 11:43:40s 0:16:20 -
XRule sol87 1987 only - Nov 8 11:43:45s 0:16:15 -
XRule sol87 1987 only - Nov 9 11:43:50s 0:16:10 -
XRule sol87 1987 only - Nov 10 11:43:55s 0:16:05 -
XRule sol87 1987 only - Nov 11 11:44:00s 0:16:00 -
XRule sol87 1987 only - Nov 12 11:44:05s 0:15:55 -
XRule sol87 1987 only - Nov 13 11:44:15s 0:15:45 -
XRule sol87 1987 only - Nov 14 11:44:20s 0:15:40 -
XRule sol87 1987 only - Nov 15 11:44:30s 0:15:30 -
XRule sol87 1987 only - Nov 16 11:44:40s 0:15:20 -
XRule sol87 1987 only - Nov 17 11:44:50s 0:15:10 -
XRule sol87 1987 only - Nov 18 11:45:05s 0:14:55 -
XRule sol87 1987 only - Nov 19 11:45:15s 0:14:45 -
XRule sol87 1987 only - Nov 20 11:45:30s 0:14:30 -
XRule sol87 1987 only - Nov 21 11:45:45s 0:14:15 -
XRule sol87 1987 only - Nov 22 11:46:00s 0:14:00 -
XRule sol87 1987 only - Nov 23 11:46:15s 0:13:45 -
XRule sol87 1987 only - Nov 24 11:46:30s 0:13:30 -
XRule sol87 1987 only - Nov 25 11:46:50s 0:13:10 -
XRule sol87 1987 only - Nov 26 11:47:10s 0:12:50 -
XRule sol87 1987 only - Nov 27 11:47:25s 0:12:35 -
XRule sol87 1987 only - Nov 28 11:47:45s 0:12:15 -
XRule sol87 1987 only - Nov 29 11:48:05s 0:11:55 -
XRule sol87 1987 only - Nov 30 11:48:30s 0:11:30 -
XRule sol87 1987 only - Dec 1 11:48:50s 0:11:10 -
XRule sol87 1987 only - Dec 2 11:49:10s 0:10:50 -
XRule sol87 1987 only - Dec 3 11:49:35s 0:10:25 -
XRule sol87 1987 only - Dec 4 11:50:00s 0:10:00 -
XRule sol87 1987 only - Dec 5 11:50:25s 0:09:35 -
XRule sol87 1987 only - Dec 6 11:50:50s 0:09:10 -
XRule sol87 1987 only - Dec 7 11:51:15s 0:08:45 -
XRule sol87 1987 only - Dec 8 11:51:40s 0:08:20 -
XRule sol87 1987 only - Dec 9 11:52:05s 0:07:55 -
XRule sol87 1987 only - Dec 10 11:52:30s 0:07:30 -
XRule sol87 1987 only - Dec 11 11:53:00s 0:07:00 -
XRule sol87 1987 only - Dec 12 11:53:25s 0:06:35 -
XRule sol87 1987 only - Dec 13 11:53:55s 0:06:05 -
XRule sol87 1987 only - Dec 14 11:54:25s 0:05:35 -
XRule sol87 1987 only - Dec 15 11:54:50s 0:05:10 -
XRule sol87 1987 only - Dec 16 11:55:20s 0:04:40 -
XRule sol87 1987 only - Dec 17 11:55:50s 0:04:10 -
XRule sol87 1987 only - Dec 18 11:56:20s 0:03:40 -
XRule sol87 1987 only - Dec 19 11:56:50s 0:03:10 -
XRule sol87 1987 only - Dec 20 11:57:20s 0:02:40 -
XRule sol87 1987 only - Dec 21 11:57:50s 0:02:10 -
XRule sol87 1987 only - Dec 22 11:58:20s 0:01:40 -
XRule sol87 1987 only - Dec 23 11:58:50s 0:01:10 -
XRule sol87 1987 only - Dec 24 11:59:20s 0:00:40 -
XRule sol87 1987 only - Dec 25 11:59:50s 0:00:10 -
XRule sol87 1987 only - Dec 26 12:00:20s -0:00:20 -
XRule sol87 1987 only - Dec 27 12:00:45s -0:00:45 -
XRule sol87 1987 only - Dec 28 12:01:15s -0:01:15 -
XRule sol87 1987 only - Dec 29 12:01:45s -0:01:45 -
XRule sol87 1987 only - Dec 30 12:02:15s -0:02:15 -
XRule sol87 1987 only - Dec 31 12:02:45s -0:02:45 -
X
X# Riyadh is at about 46 degrees 46 minutes East: 3 hrs, 7 mins, 4 secs
X# Before and after 1987, we'll operate on local mean solar time.
X
X# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
XZone Mideast/Riyadh 3:07:04 - ?? 1987
X 3:07:04 sol87 ?? 1988
X 3:07:04 - ??
END-of-solar87
echo x - systemv
sed 's/^X//' >systemv << 'END-of-systemv'
X# @(#)systemv 3.1
X
X#
X# Old rules, should the need arise.
X# No attempt is made to handle Newfoundland, since it cannot be expressed
X# using the System V "TZ" scheme (half-hour offset), or anything outside
X# North America (no support for non-standard DST start/end dates), nor
X# the change in the DST rules in the US in 1987 (can't split between
X# Canada, with no changes, and the US)
X#
X
X# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
XRule SystemV min 1973 - Apr lastSun 2:00 1:00 D
XRule SystemV min 1973 - Oct lastSun 2:00 0 S
XRule SystemV 1974 only - Jan 6 2:00 1:00 D
XRule SystemV 1974 only - Nov lastSun 2:00 0 S
XRule SystemV 1975 only - Feb 23 2:00 1:00 D
XRule SystemV 1975 only - Oct lastSun 2:00 0 S
XRule SystemV 1976 max - Apr lastSun 2:00 1:00 D
XRule SystemV 1976 max - Oct lastSun 2:00 0 S
X
X# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
XZone SystemV/AST4ADT -4:00 SystemV A%sT
XZone SystemV/EST5EDT -5:00 SystemV E%sT
XZone SystemV/CST6CDT -6:00 SystemV C%sT
XZone SystemV/MST7MDT -7:00 SystemV M%sT
XZone SystemV/PST8PDT -8:00 SystemV P%sT
XZone SystemV/YST9YDT -9:00 SystemV Y%sT
XZone SystemV/AST4 -4:00 - AST
XZone SystemV/EST5 -5:00 - EST
XZone SystemV/CST6 -6:00 - CST
XZone SystemV/MST7 -7:00 - MST
XZone SystemV/PST8 -8:00 - PST
XZone SystemV/YST9 -9:00 - YST
XZone SystemV/HST10 -10:00 - HST
END-of-systemv
exit