I have a synchronous scheduled task that has to run every 3 weeks.

For the "Schedule" field, the format is {start timestamp} | {end timestamp} | {days to run} |{interval}

the example value can be 20200901|99990101|64|02:00:00

This would run the task every Saturday every 2 hrs.

Is it possible that if I change this to 20200901|99990101|64|503:59:59 would it run the task every Saturday every 3 weeks. I have added the interval as 504 hrs because its equivalent to 24 hrs * 21 days(that is 3 weeks)

Please recommend if there can be a better solution for the same.

  • 3
    SiteCron is probably your best option for precision scheduling. Sitecore does not support complex scheduling beyond days in a given week and frequency based on timespan. Sep 1, 2020 at 12:44
  • Thanks @MichaelWest. Sep 1, 2020 at 13:52

1 Answer 1


You will not be able to achieve this by Sitecore OOTB task schedulers format

{start timestamp} | {end timestamp} | {days to run bit pattern} |{interval}

You can explore Sitecron module on Sitecore marketplace to achieve complex scheduling using Cron triggers. https://marketplace.sitecore.net/Modules/S/Sitecron

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