[Answer]-AmbiguousTimeError Celery|Django

I think i’m going to have to clear the tasks to fix this, but how can i prevent this from happening the next time the hour shifts for DST?

It’s not clear what you’re doing (you haven’t shown any code), but basically you need to take account for the way the world works. You can’t avoid having ambiguous times when you convert from local time to UTC (or to a different zone’s local time) when the time goes back an hour.

Likewise you ought to be aware that there are “gap” or “impossible” times, where a reasonable-sounding local time simply doesn’t occur.

I don’t know what options Python gives you, but ideally an API should let you resolve ambiguous times however you want – whether that’s throwing an error, giving you the earlier occurrence, the later occurrence, or something else.