cron - useful triggers

just a nice list of commonly used cron triggers I keep forgetting.

Cron Expression to fire the trigger every five minutes:
0 0/5 * * * ?
(e.g. 3:00:00, 3:05:00, 3:10:00

Cron Expression to fire the trigger every hour:
0 0 * * * ?

Cron Expression to fire the trigger every two Hours:
0 0 0/2 * * ?

Cron expression to fire the trigger every Four Hours:
0 0 0/4 * * ?

Cron Expression to fire the trigger every 10 Minutes 20 Seconds:
20 0/10 * * * ?
(e.g. 10:00:20, 10:10:20, 10:20:20)

Every half an hour between 1 AM to 7 AM on 20th of Every Month
0 0/30 1-7 5, 20 * ?
(e.g. 2010-07-20 1:00:00, 2010-07-20 1:30:00m 2010-07-20 2:00:00)

Cron Expression to fire the trigger on the 25th Minute from 1 AM to 5 PM on every Monday and Wednesday
0 25 1-5 ? * MON,WED

Cron Expression to fire the trigger at Noon every day
0 0 12 * * ?

Cron Expression to fire the trigger at Noon every day only in 2010
0 0 12 * * 2010

Cron Expression to fire the trigger Every 10 minutes between 9 AM to 5 PM (until 5:50) Every Day
0 0/10 9, 17 * * ?

Cron Expression to fire the trigger at 2:30 PM on the last Saturday of every month.
0 30 14 ? * 7L

Cron Expression to fire the trigger at 7:10 AM every Monday, Tuesday, Wednesday, Thursday and Friday
0 10 7 ? * MON-FRI

Cron Expression to fire the trigger at 2:10 PM and at 2:40 PM every Sunday in the month of July.
0 10,40 14 ? 7 SUN


source: cron-expression-to-fire-the-trigger-every-hour