clockwork Daylight savings

I just have a general question. Does clockwork cater for changes to the time by way of daylight savings? So for example you have a database driven schedule (checking for updates every minute) and one of the database rows has a timezone of Pacific/Auckland, to run every week on a Sunday at 3am.

When daylight savings rolls around and the clocks are turned backwards from 3am to 2am, is the scheduled event going to happen at the old 3am (which is now 2am) or the new 3am?

Jan 09 '18 02:01 JamesPlayer

@JamesPlayer did you ever find an answer to this question?

Mar 11 '19 22:03 chukkwagon

@chukkwagon no I never got an answer but as far as I can tell it doesn't cater to daylight savings changes so I just have a regular cron that runs every minute, checks all records to see if there any that match the current day of the week / time and then spawns a new queued job to run the task if there are any matches.

Mar 12 '19 09:03 JamesPlayer

Thanks for getting back to me. Interestingly, I do not believe that the following snippet is amenable to DST cutover for daily periods that specify an at argument.

https://github.com/Rykian/clockwork/blob/b6baf3ec5948cf82b85f4be89d7d8586c5350a7d/lib/clockwork/event.rb#L64-L66

For a 24 hour period (3am Sunday to 3am monday) daily jobs will not run because the maximum time elapsed will be 23 hours.

Mar 12 '19 16:03 chukkwagon