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Newfoundland Daylight Time, Newfoundland Standard Time, NDT, NST

From mid-March to early November, Newfoundland Daylight Time is observed in Newfoundland and parts of Labrador. From early November to mid-March, Newfoundland Standard Time is in effect.

The time difference between the Newfoundland and Atlantic time zones is one-half hour.

  • The radio broadcast will air at 10:00 a.m. in Halifax, and at 10:30 a.m. in St. John’s, which is on Newfoundland Daylight Time.


Usage is divided with regard to the use of capitals in the names of time zones. However, Canadian dictionaries and most Canadian style guides treat the official names of time zones as proper nouns and capitalize all words: Atlantic Daylight Time and Atlantic Standard Time.


The name of the time zone is abbreviated when a specific time is stated; otherwise, it is written out in full. The abbreviations NDT and NST are written in upper case, with no periods.

Time zones may be stated with either the 12-hour or 24-hour system (e.g. 4:15 p.m. NDT or 16:15 NDT).

  • The ferry sails from Argentia at 5:30 a.m. NDT.
  • The chartered bus will leave St. John’s at 23:30 NST and arrive at the park entrance by dawn.