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Flag for USA Clock Changes in Sierra Vista, Arizona, USA

No DST

1970 - 2030

No further time changes in 2016
in Sierra Vista

Location of Sierra VistaLocation

Daylight Saving Time (DST) Not Observed in Year 2016

Sierra Vista currently observes Mountain Standard Time (MST) all year.

Daylight Saving Time has not been used since our records start, in 1970.

There is no previous DST change in Sierra Vista, USA.

DST data from before 1970 is not available for Sierra Vista, USA. However, we have earlier DST history for Phoenix, USA available.

Which countries & states use DST and which do not?

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