Updating windows daylight savings
Members of the European Union conduct a coordinated shift, shifting all zones at the same instant, at Coordinated Universal Time (UTC), which means that it changes at Central European Time (CET), equivalent to Eastern European Time (EET); as a result, the time differences across European time zones remain constant.North America shifts at but at the local time and is consequently uncoordinated - so that, for example, Mountain Time is, for one hour in the autumn, zero hours ahead of Pacific Time instead of one hour ahead and, for one hour in the spring, two hours ahead of Pacific Time instead of one hour ahead.
Unequal hours are still used in a few traditional settings, such as some monasteries of Mount Athos Despite common misconception, Franklin did not actually propose DST; 18th-century Europe did not even keep precise schedules.
The opposite is also possible, with Ireland, for example, defining its summer time to be the legal standard and winter time to be a negative offset.
The time at which to change clocks differs across jurisdictions.
However, this changed as rail transport and communication networks required a standardization of time unknown in Franklin's day.
In 1810, the Spanish National Assembly Cortes of Cádiz issued a regulation that moved certain meeting times forward by one hour from May 1 to September 30 in recognition of seasonal changes, but it did not actually change the clocks.