Cron Sandbox processing . . .
MinsHrsDayMthDoW
0523**mon,wed,fri


Enter a crontab command string. Click 'Run'.

The results are listed on the left. This shows the future dates and times that a job would run for the crontab command string you entered.
'Run' an empty box to return to the start-up demo.

Reminder of the format... mm hh D M DoW
mm - the minute, a value 0-59
hh - the hour, a value 0-23
D - the day number in the month, 1-31
M - month, 1-12
DoW - day-of-the-week, 0-6 (0 = Sunday)

A '*' in any position means all values.
Multiple values '0,20,40', all in range '0-59'.
Every nth '0-59/n', '*/2' would be every other.

Month can be just the first three letters of the name,
so 'mar,jun,sep,dec' or '3,6,9,12' or '3-12/3'
would all give you quarterly reports.

The Day-of-the-Week can be e.g. 'mon,wed,fri'.

Cron Sandbox & Tutorials
There are many crontab tutorials on the web that offer a more detailed explanation. Come back here to experiment with the various combinations of crontab parameters.

This run time (UTC) Wed20 Aug20082244
Forward ScheduleFri22 Aug20080523
Mon25 Aug20080523
Wed27 Aug20080523
Fri29 Aug20080523
Mon01 Sep20080523
Wed03 Sep20080523
Fri05 Sep20080523
Mon08 Sep20080523
Wed10 Sep20080523
Fri12 Sep20080523
Future development might be to upload a real crontab file and get back a schedule for all the jobs.
If this sounds interesting, we would appreciate some sample crontab files by email, or just your comments. Contact