Monthly
Last Day of Month Cron Note
Learn why standard Linux cron does not directly support a last-day-of-month shortcut.
Cron expression
0 0 28-31 * *Plain English explanation
Runs at midnight on days 28 through 31 of every month; add script logic to detect the true last day.
Linux 5-field cron does not have a portable L character for last day. Quartz cron may support L, but Linux crontab generally does not.
Field breakdown
Minute
0
At minute 0
0-59
Hour
0
At 12 AM
0-23
Day of Month
28-31
From 28 through 31
1-31
Month
*
Every month
1-12
Day of Week
*
Every day of the week
0-7, where 0 or 7 is Sunday
Use case
Use this pattern with application-side checks when you need last-day-of-month behavior in Linux cron.
FAQ
What does this cron expression mean?
Runs at midnight on days 28 through 31 of every month; add script logic to detect the true last day.
Can I use this in Linux crontab?
Yes. This is a standard Linux 5-field cron expression when used with a normal crontab command.
Does this work in GitHub Actions?
Usually yes for 5-field syntax, but GitHub Actions schedules run in UTC and may be delayed during high load.
How can I change the time?
Edit the minute and hour fields, or open the expression in the Cron Generator or Playground.
How can I test this expression?
Use the Cron Validator to check syntax and the Next Run Calculator to preview upcoming executions.