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Clock Changes in Sierra Vista, Arizona, USA 2022

No DST

1970 - 2030

No further time changes in 2022 in Sierra Vista
Location of Sierra VistaLocation

Daylight Saving Time (DST) Not Observed in Year 2022

USA 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?