kelly, how's that? I'm using OS 9.2.2 and I don't think it changes. (I forgot about that one!) I know my Mac running OS 7.5.3 does not change. (I got that one.) There are so many devices with timepieces.
I also have:
kitchen clock (battery)
range clock
microwave clock (one room down)
alarm clocks (three of them)
VCR clocks (two)
FAX machine
Automobiles (three)
light timer (manual - one in use now, another for Xmas lights soon)
switch timers (two - for outside lights)
thermostat (automated adjustments)
temperature and humidity gauge (just purchased)
wrist watches (two for me, three others in household)
Anybody out there with another timed device?
Are they all in sync within one minute???
time