977
xkcd #2846: Daylight Saving Choice
(imgs.xkcd.com)
Alt text:
I average out the spring and fall changes and just set my clocks 39 minutes ahead year-round.
Why not a base 16 then ?
12 is a superior highly composite number, which means it's easier to divide without running into fractions or decimals.
Interesting, I did not knew the concept