Cron Job Daily at Midnight: 0 0 * * *
To run a cron job daily at midnight use:0 0 * * * This means minute 0, hour 0 (midnight), every day. Note: midnight is always in the server's timezone, not yours.Expression Breakdown
Field valueMeaning
0minute 00hour 0 (midnight = 00:00)*every day of month*every month*every day of weekCommon Variations
0 0 * * *Every day at midnight (00:00 server time)
0 3 * * *Every day at 3am — good for maintenance windows
0 12 * * *Every day at noon (12:00)
0 0,12 * * *Twice daily — at midnight and noon
0 0 * * 1-5Daily at midnight on weekdays only (Mon–Fri)
0 0 1 * *First day of every month at midnight
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Frequently Asked Questions
Is midnight 0 0 or 24 0 in cron?
Always 0 0 * * * — cron uses 0–23 for hours. 24 is not a valid value. Hour 0 is midnight, hour 12 is noon.
What timezone does cron use?
The server's system timezone. On AWS and GCP it's often UTC. Check your timezone with: date or cat /etc/timezone on Linux.
How do I run at midnight in a specific timezone?
Convert your target midnight to the server's timezone. If the server is UTC and you want midnight EST (UTC-5): 0 5 * * * — that's 5am UTC = midnight EST.
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