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Clock Changes in Sierra Vista, Arizona, USA in 2018

No DST

1970 - 2030

No further time changes in 2018
in Sierra Vista

Location of Sierra VistaLocation

Daylight Saving Time (DST) Not Observed in Year 2018

Sierra Vista observed Mountain Standard Time (MST) all year.

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

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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