On Tue, 31 Aug 2021 03:59:52 -0700 (PDT), dcs3spp via Python-list <python-list@python.org> declaimed the following:
>I cannot understand why the resultant datetime.timedelta is days=-1, >seconds=82800 (23 hours) . > Read the documentation... https://docs.python.org/3/library/datetime.html#timedelta-objects >Why is it not an hour earlier as seconds=-3600? Why is days = -1 when the >resultant calculated date is the same, year, day, month?? """ and days, seconds and microseconds are then normalized so that the representation is unique, with 0 <= microseconds < 1000000 0 <= seconds < 3600*24 (the number of seconds in one day) -999999999 <= days <= 999999999 """ Note that microseconds and seconds are ALWAYS normalized to be a positive integer. So your input on -3600 is normalized to +82800 from the previous day. -- Wulfraed Dennis Lee Bieber AF6VN wlfr...@ix.netcom.com http://wlfraed.microdiversity.freeddns.org/ -- https://mail.python.org/mailman/listinfo/python-list