[comp.sys.mac.system] Map--an oddity and a daylight saving tip

ldo@waikato.ac.nz (Lawrence D'Oliveiro, Waikato University) (10/31/90)

I've noticed an oddity with the "Map" Control Panel module. I have my
machine location set to coincide with one of the cities in its database
(Wellington, actually), but I set my time zone to be 13 hours ahead
of GMT, what with it being summer and daylight saving. I did this
without changing the value for Wellington in the database--this is
still GMT+12 hours.

The odd thing is, when I bring up Map in the Control Panel, it very
briefly displays the correct time I have set on my machine, and then
immediately replaces it with a value one hour behind, which it continues
to display thereafter. This value is, of course, the time at location
Wellington, according to the information in the database.

What I'm asking is, can this behaviour be changed? It would be nice
if Map always started out displaying the time for your machine, and
only changed to displaying the time at a city when you'd clicked on
that city. This seems more natural, I think.

By the way, here's a handy tip for dealing with daylight saving,
while keeping Map's idea of the time in other cities correct: when
daylight saving starts or ends, don't change the time in General
or the Alarm Clock DA--instead, use Map to change your GMT offset!

First of all, make sure you've used Map to set your machine location
and GMT offset at least once. Then make sure your machine's clock
is still displaying the right time (you can check this with General
in the Control Panel). Now you can come back to Map, and try
setting your time zone backward or forward by one hour--Map will
automatically change your machine's clock by the same amount,
so GMT remains unchanged.

Lawrence D'Oliveiro                       fone: +64-71-562-889
Computer Services Dept                     fax: +64-71-384-066
University of Waikato            electric mail: ldo@waikato.ac.nz
Hamilton, New Zealand    37^ 47' 26" S, 175^ 19' 7" E, GMT+13:00
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