I'd say that wouldn't enforcement be rather simple going forwards since you could just enforce that dt.tzinfo == datetime.timezone.utc, but as far as I know, ti

I'd say that wouldn't enforcement be rather simple going forwards since you could just enforce that dt.tzinfo == datetime.timezone.utc, but as far as I know, timezone information checking in Python can be a bit of a pain. >>> utc1 = datetime.timezone.utc >>> utc2 = zoneinfo.ZoneInfo("UTC") >>> utc1 == utc2 False >>> dt1 = datetime.datetime.now(utc1) >>> dt2 = datetime.datetime.now(utc2) >>> dt1.tzinfo == dt2.tzinfo False