Cron

Format of cron

minute hour day_of_month month day_of_week command_to_execute
# Possible values:
* any value
, value list separator
- range of values
/ step values
@yearly (non-standard)
@annually (non-standard)
@monthly (non-standard)
@weekly (non-standard)
@daily (non-standard)
@hourly (non-standard)
@reboot (non-standard)

Web to test it: https://crontab.guru/

Examples:

30 2 * * 1 # At 02:30 on Monday.