The UK tried it from 1968 to 1971 as well: https://en.m.wikipedia.org/wiki/British_Summer_Time#Periods_of_deviation https://en.m.wikipedia.org/wiki/British_Summ

The UK tried it from 1968 to 1971 as well: https://en.m.wikipedia.org/wiki/British_Summer_Time#Periods_of_deviation https://en.m.wikipedia.org/wiki/British_Summer_Time#Periods_... But as others have said, Arizona (sans some reservations and jurisdictions) have been fine so maybe history won't repeat itself. And of course there are plenty of countries worldwide that don't have DST anyways.