Cron expression for every day at midnight

The standard expression is 0 0 * * * (minute 0, hour 0, every day).

Every day at 00:00

0 0 * * *

Every day at 00:05 (safer offset for batch jobs)

5 0 * * *

First day of every month at 00:00

0 0 1 * *

Weekdays at midnight only

0 0 * * 1-5

Midnight gotchas to check before deploy

Confirm whether your cron host runs in UTC or local timezone.
Avoid running many heavy jobs exactly at 00:00; stagger to 00:05 or later.
In DST regions, midnight is usually stable, but adjacent windows can still shift.

Paste your expression into the Cron Scheduler to verify next run times in UTC and your local timezone.