Daylight Saving Time

• Atlantic Daylight Saving Time (ADT) starts on the second Sunday of March (The clock went forward by one hour).
• ADT ends on the first Sunday of November (The clock time will go back one hour).
• Atlantic Standard Time (AST) is used during the remainder of the year.

• AST - Atlantic Standard Time (UTC-4)
• ADT - Atlantic Daylight Time (UTC-3)

The IANA time zone identifiers for Atlantic Time are

• America/Glace_Bay,
• America/Goose_Bay,
• America/Halifax and
• America/Moncton.