# Run watcher every 90 minutes with cron

**URL:** <https://discuss.elastic.co/t/run-watcher-every-90-minutes-with-cron/161102>\
**Category:** Elasticsearch\
**Tags:** elastic-stack-alerting\
**Created:** [December 17, 2018, 9:21am UTC](https://discuss.elastic.co/t/run-watcher-every-90-minutes-with-cron/161102 "2018-12-17T09:21:18Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Yasser\_Ouakil](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/yasser_ouakil/32/34466_2.png) [@Yasser\_Ouakil](https://discuss.elastic.co/u/Yasser_Ouakil)\
**Post date:** [December 17, 2018, 9:21am UTC](https://discuss.elastic.co/t/run-watcher-every-90-minutes-with-cron/161102/1 "2018-12-17T09:21:18Z")

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Trying to adjust a cron to run every 90 min. It was previously running every 20 min, which was :

0 0/20 \* \* \* ? whatever

How can i do the same things with 90min ?

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**Author:** ![pjanzen](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/pjanzen/32/13756_2.png) [@pjanzen](https://discuss.elastic.co/u/pjanzen)\
**Post date:** [December 17, 2018, 12:14pm UTC](https://discuss.elastic.co/t/run-watcher-every-90-minutes-with-cron/161102/2 "2018-12-17T12:14:52Z")

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> [@Yasser\_Ouakil](#):
>
> 0 0/20 \* \* \*

That will not work I think.. [Check this, crontab.guru is really handy](https://crontab.guru/#0_0/90_*_*_*)

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**Author:** ![Yasser\_Ouakil](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/yasser_ouakil/32/34466_2.png) [@Yasser\_Ouakil](https://discuss.elastic.co/u/Yasser_Ouakil)\
**Post date:** [December 17, 2018, 2:31pm UTC](https://discuss.elastic.co/t/run-watcher-every-90-minutes-with-cron/161102/3 "2018-12-17T14:31:22Z")

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0 0/90 \* \* \* is doesn't work !  
the valid values are : 0-59 !

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [January 14, 2019, 2:31pm UTC](https://discuss.elastic.co/t/run-watcher-every-90-minutes-with-cron/161102/4 "2019-01-14T14:31:24Z")

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