North America goes to Daylight savings time on Sunday, March 13th.  Europe and much of the rest of the world will make the switch on March 27th. 

Much of Asia doesn't bother. Note also that the Middle East shifts on different days. Israel, for example, changes on Friday the 25th while Palestine shifts on Saturday the 26th. 

You can see a complete list at https://www.timeanddate.com/time/dst/events.html

So, to avoid confusion, have everybody double-check their calendars. 

Or take a two week break and let the dust settle that way. 

Best, 

/chet 

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