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Clock Changes in Old Tucson, Arizona, USA


1970 - 2030

No further time changes in 2020 in Old Tucson
Location of Old TucsonLocation

Daylight Saving Time (DST) Not Observed in Year 2020

Old Tucson currently observes 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 Old Tucson, USA. However, we have earlier DST history for Phoenix, USA available.

Which countries & states use DST and which do not?