At 2:00 AM on Sunday morning March 13, the clock will change to 3:00 AM.
As per Black Book Document #20 – When, in accordance with the Daylight Saving Act of British Columbia, clocks are advanced one hour in the Spring of the year, the change occurs at 2:00 a.m.
On March 13, when the clocks are advanced, the Graveyard Shift shall be one hour less than normal and employees working that shift shall be paid 5 and ½ hours at Graveyard Shift Rates of Pay.