Yep, the problem we had was all our tests ran fine on dev machines (local tz) but failed when deployed to production (UTC). We were doing some pretty complicate

Yep, the problem we had was all our tests ran fine on dev machines (local tz) but failed when deployed to production (UTC). We were doing some pretty complicated time calculations so it caused us a lot of trouble. I didn’t want to mandate UTC because the code should work deterministically regardless if the server time zone. But also, technically it’s a bug if you think you’re working in UTC, but you’re actually working in clock face time.