What was midnight yesterday as an epoch time?

Question

I\'m trying to get my head around the datetime module. I know the time now as an epoch and the time an event last happened (as an epoch time). What I need to do is figure

Answer 1

Given such a timestamp, you can use divmod to compute the number of days since the epoch (which you don't care about), and how many seconds are leftover (which you do):

days_since, remaining_seconds = divmod(t, 24*3600)  # Divide by number of seconds in one day

Then, you subtract the leftover seconds from your original timestamp, which produces midnight of the current day.

t -= remaining_seconds

Rounding up is as simple as shifting your target timestamp forward exactly one day before rounding down.

tomorrow_t = t + 24 * 3600
days_since, remaining_seconds = divmod(tomorrow_t, 24*3600)
t = tomorrow_t - remaining_seconds