Ben Walton [off-list ref] writes:
also avoids the oddball 1/2 hour DST shift. I can re-roll the series
with your code (and credit for it) or you can apply you change on top
of my series...whichever is easiest for you.
Please reroll, as I do not have patience either to set up a test
case and verify the end result is correct, or to come up with a test
case for it. For this particular case, I think the identification
of the issue weighs more than the implementation for fix it, so
please retain the authorship for the fix; mentioning "taking the
implementation idea from Junio" in the log message is the right
amount of credit due to me.
Thanks.