From April to October, Eastern Daylight Time is observed in most of Ontario, Quebec and parts of Nunavut. From October to April, Eastern Standard Time is in effect. The name of the time zone is abbreviated when a specific time is stated; otherwise it is written out in full. The abbreviations EDT and EST are written in upper case, with no periods. Time zones may be stated with either the 12-hour or 24-hour system (e.g. 3:15 a.m. EDT or 03:15 EDT).
- Many television schedules are based on Eastern Standard Time, because Toronto and New York were the first production centres.
- The fireworks will begin at 11:15 p.m. EDT.
- The lion cubs were born at 04:45 EST and were shown to the public at noon.
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