Cron Reference

Every Month

Yes — most cron implementations treat @monthly as 0 0 1 * * .

Runs on the 1st day of every month at midnight.

Cron Expression

0 0 1 * * Test in tool

At 12:00 AM, on the 1st

Expression Breakdown

Minute	Hour	Day	Month	Weekday
0	0	1	*	*
0	0	1	any	any

Times are relative to the server's local clock at page load.

Run crontab -e and add this line:

0 0 1 * * /path/to/your/script.sh

scheduler.add_job(my_func, 'cron',
    minute='0',
    hour='0',
    day='1',
    month='*',
    day_of_week='*')

on:
  schedule:
    - cron: '0 0 1 * *'

What does 0 0 1 * * mean?

Midnight on the 1st day of every month.

How do I run a job on the last day of each month?

Cron has no direct 'last day' syntax. A common workaround is 0 0 28-31 * * combined with a script that checks whether tomorrow is the 1st.

Is @monthly the same as 0 0 1 * *?

Yes — most cron implementations treat @monthly as 0 0 1 * *.