CODEWITHSUNDEEP
croncron-task
user3116949
user3116949

Reputation: 275

Cron Expression for every 30 minutes in quarter hour periods?

I am currently trying to generate a cron expression that runs every 30 minutes throughout the day but at hours like 10:15, 10:45, 11:15 and so on. I know that the cron expression 0 0/30 * 1/1 * ? * runs every 30 minutes but it does it at 10:00, 10:30, 11:00, 11:30 and so on. I wanted to know if there is a way to create a cron expression that would run at hours like 9:15, 9:45, 10:15, 10:45 and so on, like in quarter hour periods?

Upvotes: 2

Views: 3222

Answers (2)

Paradox
Paradox

Reputation: 4566

Instead of:

0 0/30 * 1/1 * ? *

Use:

0 15,45 * 1/1 * ? *

This will run 15 and 45 minutes after every hour, resulting in the desired times 9:15, 9:45, 10:15, 10:45, etc.

Upvotes: 0

Mureinik
Mureinik

Reputation: 311853

Running every 30 minutes starting with 15 minutes after the hour is just running twice an hour - at :15 and at :45. So instead of over-complicating, just have list those two options with a comma:

0 15,45 * 1/1 * ? *

Upvotes: 1

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