Datetime conversion in Python can overflow non-deterministically

[sc1f]

When we convert datetimes to Unix timestamps, at non-deterministic times overflows may happen - the attached screenshot caused an overflow error at ~9:57:30-9:58:15PM, but did not error again when run at ~9:58:30PM.

[texodus]

In lieu of a repro, going to go ahead and close this issue, as our date/datetime processing has matured quite a bit since reporting.