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Daylight Saving Time (DST) change with z/VSE

By Jens Remus posted Mon March 02, 2020 11:48 AM

  
Continuing Ingolf's tradition this post is about z/VSE considerations for the upcoming Dayling Saving Time (DST) change in March 2020. The clock is turned one hour forward at 2 a.m local standard time on:

  • USA: Sunday, March 8, 2020
  • Germany: Sunday, March 29, 2020

Regarding z/VSE considerations I'll quote Ingolf from his post from February 2, 2019 in Ingolf's z/VSE Blog:

"A local time change forward has normally no effect on subsystem operation. It may have an impact on accounting, however. A local time change backwards could affect subsystems and accounting routines more severely. Therefore I recommend to IPL the z/VSE system for any time changes.

With the z/VSE IPL commands SET ZONEDEF and SET ZONEBDY you can switch between standard and daylight local times without changing the IPL startup procedure each time. However, you have to IPL the system in order to switch to the new time zone. See the z/VSE System Control Statements manual for details."

References:

Disclaimer: My posts and opinions are my own.
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