Fields order

 +---------------- minute (0 - 59)
 |  +------------- hour (0 - 23)
 |  |  +---------- day of month (1 - 31)
 |  |  |  +------- month (1 - 12)
 |  |  |  |  +---- day of week (0 - 7) (Sunday=0)
 |  |  |  |  |
 *  *  *  *  *

Each of the patterns from the first five fields may be either * (an asterisk), which matches all legal values, or a list of elements separated by commas (see below).

For "day of the week" (field 5), 0 is considered Sunday, 6 is Saturday (7 is an illegal value)

A job is executed when the time/date specification fields all match the current time and date. There is one exception: if both "day of month" and "day of week" are restricted (not "*"), then either the "day of month" field (3) or the "day of week" field (5) must match the current day (even though the other of the two fields need not match the current day).

Fields operators

There are several ways of specifying multiple date/time values in a field:

Examples

 */15 * * * : Execute job every 15 minutes
 0 2,14 * * *: Execute job every day at 2:00 and 14:00
 0 2 * * 1-5: Execute job at 2:00 of every working day
 0 12 1 */2 1: Execute job every 2 month, at 12:00 of first day of the month OR at every monday.