Cron Descriptor
Explain and understand cron expressions
Cron Expression
Format: minute hour day month day-of-week
Cron Fields
Minute (0-59)
0, 15, 30, 45
Hour (0-23)
0-23 or 12AM-11PM
Day (1-31)
1, 15, * or ?
Month (1-12)
1-12 or * for all
Day of Week (0-6)
0=Sun, 1=Mon ... 6=Sat