To handle daylight saving time JobScheduler works in the following manner:
Change from winter to summer time at the end of March
Jobs / orders planned between 2 a.m. and 3 a.m. will be processed one hour before they planned to avoid that one start time is omitted. That means, a job planned at 2:10 a.m. will be shifted to 1:10 a.m. at the last Sunday in March.
Change summer to winter time at the end of October
Jobs / orders planned between 2 a.m. and 3 a.m. will be executed twice, therefore it is recommended to plan the start times outside this range, if the processes will be run at Sunday.
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Starting with version 1.5.xxxx the time model of JobScheduler changed to UTC time. It works with a continious time ray, therefore problems with dayligt saving time described above are excluded.
The version 1.5.xxxx is currently (January 2013) in beta status and will plan the first release version at the end of June 2013.
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