0 0 * * 0 — what this cron expression means

The cron expression 0 0 * * 0 runs every Sunday at midnight. Here is the field-by-field breakdown and what it means in plain English.

Cron expression (minute hour day-of-month month day-of-week)

What 0 0 * * 0 means

It runs every Sunday at midnight.

minute=0, hour=0 (midnight), day-of-month *, month *, day-of-week=0 (Sunday).

In cron, day-of-week 0 is Sunday (7 also works). So this fires once a week, at 00:00 on Sunday.

Next run: the coming Sunday at 00:00.

It runs once a week, at midnight on Sunday. Day-of-week 0 is Sunday.

Both. 0 and 7 both mean Sunday; 1 is Monday through 6 Saturday.