http://science.nbcnews.com/_news/2013/0 ... -time?lite

There are a number of exceptions dotted across Canada including:
* Creston, B.C., which uses mountain standard time all year.
* The areas of Québec east of 63 degrees west longitude, which is on Atlantic standard time year round.
* Southampton Island in Nunavut, which is always on eastern standard time.
* Pickle Lake, Ont., and Atikokan, Ont., which observe eastern standard time.
the exceptions In the U.S. are -
* Arizona (except for the Navajo Nation, which does observe daylight saving time)
* Hawaii
* Puerto Rico
* American Samoa
* Guam
* The Northern Mariana Islands
* The US Virgin Islands.
On time zones, Saskatchewan and Newfoundland are not alone on this planet.
At 2 a.m. Sunday, Saskatchewan will effectively remain on daylight time, while the other provinces return to standard time.
Going by the sun's position in the sky, Saskatchewan should be on mountain time, the same as Alberta. The border city of Lloydminster gets it right and uses mountain time but the rest of Saskatchewan is effectively on daylight time year round, while the province says it's on standard time.
Lots of places do the same, and some by more than an hour.
It's time to reset the clocks and "fall back" this weekend.
Canadians in provinces that use daylight saving time during the summer months will need to turn their clocks back by an hour at 2 a.m. on Sunday Nov. 1 for the switch to local standard time (although it's probably a good idea to do it before heading to bed Saturday night).
In other words, at 2 a.m. local time on Sunday the clocks officially roll back to 1 a.m. and people will get an extra hour in bed.