Hi,
Please see this Article about formating Cron Strings:
https://www.ptc.com/en/support/article/CS210207
- A cron expression will be comprised of 6 or 7 fields, separated by white space.
- Every field except Year is mandatory
- Special characters and their meanings:
- * = all values in a field
- ? = no specific value in a field
- - = specify range between values
- , = specify additional values
- / = specify increments
- 0/10 in the seconds field translates to the seconds 0, 10, 20, 30, 40, and 50
- L = "last"
- L in day of month field means the last day of the month
- L in day of week field it means 7 or SAT
- 4L in day of week field it mean the last WEDNESDAY of the month
- Do not specify ranges of values to avoid misinterpreted results
- W = weekday
- 10W in day of month field means the nearest weekday to the 10th of the month; if the 10th is a Saturday the trigger would fire on Friday
- If 1W were the value in the day of month field and it happened to be a Saturday the trigger would fire on Monday because it would still stay in this month and not jump back to the prior month
- LW can be combined in the day of month field to trigger the last weekday of the month
- # = specify the nth day of the week of the month
- 4#3 in day of week field translates to the third Wednesday of the month
- If n#5 is specified and there is not 5 of n day of week in the month the trigger will not fire
- The following table displays all of the field names and their allowed values and special characters
| Field Name |
Allowed Values |
Allowed Special
Characters |
| Seconds |
0-59 |
, - * / |
| Minutes |
0-59 |
, - * / |
| Hours |
0-23 |
, - * / |
| Day of month |
1-31 |
, - * ? / L W |
| Month |
1-12 or JAN-DEC |
, - * / |
| Day of week |
1-7 or SUN-SAT |
, - * ? / L # |
| Year |
empty, 1970-2099 |
, - * / |
For more details refer below link:
