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Year released:
[www].se [ftp].se [mirror].us [mirror].de
DayLightSavingsTime.sea_.hqx (155.71 KB)
MD5: 5a334631a36928b4e5b31c67abbca7b1
For System 7.0 - 7.6 - Mac OS 8 - 8.1
This app works with: SheepShaver, Basilisk II,

This program does one simple thing. It updates your Macintosh clock when Daylight
Savings Time begins and ends. This is a must have for those supporting large
numbers of Macintosh Computers or for anyone who doesn't want to think
about changing the time when Daylight Savings Time begins or end.

Architecture: 68k PPC

A couple of notes:

1. You must make sure that you have set your Time Zone in the Date & Time
control panel. The offset will be updated correctly by DayLightSavingsTime
but will not be correct if you have not set your time zone.
2. I have tested this on a variety of Macs from SE/30's to PowerMac 7200's
running everything from System 7.1 to 7.6 and have not had any
problems. If you do have problems please send a description of them and
the machine and system they occured on to (link has not been tested).
3. This program is designed to have an alias in the Startup Items folder so
that it launches each day automatically. If the computer is not started on the
day the time changes, it will check for up to 30 days from the last date the
program ran, up to the current date, to see if the time had changed. If so, it will
update it. This solves the problem of the computer not being used on the
day of the change.

Not necessary with Mac OS 8.5 or later.


3371-Alpha's picture
by 3371-Alpha - 2016, September 14 - 4:11am

I honestly don't know. All I know is that I obtained it from this page here:
"Best Classic Mac Software". We wouldn't exactly want it to disappear would we? So I uploaded it along with a few others, such as MenuChoice 2.1.

WhosIt.There's picture
by WhosIt.There - 2016, September 14 - 2:31am

I wonder how it knows when Daylight Saving times starts and ends in various places. I know Mac OS (both "Classic" and early X versions) fail at doing this correctly thanks to the local government changing the scheme a few years ago after those OS versions stopped being suported. Sad