On Mar 31, 2006 The government of British Columbia has just decided to follow the US change From a Press release of the Attorney General of BC

Beginning in 2007, Daylight Saving Time (DST) in most of B.C. will begin three weeks earlier, on the second Sunday in March - March 11, 2007. The period will end on the first Sunday in November - that is Nov. 4, 2007. Exceptions will be those areas of the province that have historically chosen to observe different times for all or part of the year. The Peace River region does not observe DST, so its clocks will not change. The East Kootenay region observes Mountain Time, and will likely continue to synchronize its clocks with Alberta.