DST in the USA 2017
Begin: March-12, 2017, @2 am (clocks will be advanced 1 hr).
End: November-5, 2017 @3 am.
Arizona has no DST. During summer Arizona has the same time as California, in winter it has the same time as Colorado.
DST 2017 in Western Europe: e.g. Germany, Austria, Switzerland
Begin: March-26, 2017 @2 am.
End: October-29, 2017.
DST New Zealand, Australia:
Since NZ & Australia are located in the southern hemisphere, DST is 'kind of' reversed:
2017: DST ends on 2-April and starts again on 24-September