* * * * *
Every minute
0 * * * *
Every hour
0 0 * * *
Daily midnight
0 9 * * 1-5
Weekdays 9am
*/15 * * * *
Every 15 min
0 0 * * 0
Weekly Sunday
0 0 1 * *
Monthly 1st
30 2 * * *
Daily 2:30am
At 09:00, Monday through Friday
Next 5 Runs
Standard 5-field cron syntax (minute, hour, day, month, weekday)