Tomorrow might be the last time Canadians in British Columbia will put the clock back one hour before going to bed. The B.C. government has started an effort to formally do away with seasonal time changes. Scholars in a variety of fields have been pushing for permanent daylight time for years. They note the original reason for the semi-annual shift has lost its relevance today. Numerous studies have also documented an increase in road accidents, workplace safety incidents and even heart attacks that can be linked to sleep disruption. But Canadian governments are unlikely to pull the trigger unless the United States, the country's largest trading partner, does so first. Only Saskatchewan and some cities have opted not to embrace the seasonal changes and maintain one time zone year-round.