How Cron works:
<Minute> <Hour> <Day_of_the_Month> <Month_of_the_Year> <Day_of_the_Week>
* * * * * * | | | | | | | | | | | +-- Year (range: 1900-3000) | | | | +---- Day of the Week (range: 1-7, 1 standing for Monday) | | | +------ Month of the Year (range: 1-12) | | +-------- Day of the Month (range: 1-31) | +---------- Hour (range: 0-23) +------------ Minute (range: 0-59)
Examples:
0 0 * * * * Daily at midnight
5 minutes after midnight each day
05 0 * * * root