30 3 * * * — what this cron expression means
The cron expression 30 3 * * * runs 3:30 AM every day. Here is the field-by-field breakdown and what it means in plain English.
What 30 3 * * * means
It runs once a day at 3:30 AM.
Field by field
minute=30, hour=3, day/month/day-of-week all * — so every day at 03:30.
A common off-peak slot for nightly backups and cleanup jobs.
When it runs next
Next run: the next matching time for 30 3 * * *.
FAQ
What time is 30 3 * * *?
3:30 AM, every day.
Why run jobs at 3:30 AM?
Low traffic hours reduce the impact of heavy tasks like backups or report generation.