970
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.
That's still based on Jesus's birth year, it's not the same as saying something like "We're trying to standardize, we know the agricultural revolution happened about 12k years ago, let's go back 12k years from the biggest standardization event in human history, i.e. the metre convention, that means current year is 12148."
No shift in the day of the year (or the date/month in other words)