Time Zone History

Goose Bay time zone history

The record holds 8 different UTC offsets, tied for the most among all 312 zones. Its seasonal clock changes since 1970 include moves of 2 hours, not the usual hour. Clocks have been changed 114 times since 1970, tied for the most among the 19 zones on UTC−4 standard time.

UTC−4

Standard time is UTC−4 (ADT/AST); clocks go forward to UTC−3 on the second Sunday in March and back on the first Sunday in November.

Covers: Labrador (most areas) · tz database name America/Goose_Bay

Convert a time from Goose Bay

Summer time in every year since 1970

UTC−4:01:40: 2 minutes behind today’s standard timeUTC−4: today’s standard timeUTC−3:30:52, UTC−3:30: ahead of today’s standard timeUTC−3, UTC−2:30:52, UTC−2:30: ahead of today’s standard timeUTC−2: 2 hours ahead of today’s standard timeUTC−4:01:40: 2 minutes behindtoday’s standard timeUTC−4: today’s standard timeUTC−3:30:52, UTC−3:30: ahead oftoday’s standard timeUTC−3, UTC−2:30:52, UTC−2:30:ahead of today’s standard timeUTC−2: 2 hours ahead of today’sstandard time

How to read this chart

Before 1970

18801900192019401960188019201960
JanFebMarAprMayJunJulAugSepOctNovDec1970198019902000201020202028JFMAMJJASOND1970198019902000201020202028

Standard time changes

DateChangeNew standard timeClock label
Before 1970
January 1, 1884Local mean time (UTC−4:01:40) replacedUTC−3:30:52NST
March 30, 1935Standard time forward 1 minuteUTC−3:30NST
March 15, 1966Standard time back 30 minutesUTC−4AST

Daylight saving periods

YearsClocks go forwardClocks go backShift and labels
Before 1970
1918April 14October 271 hour, NST to NDT
1936–1938second Monday in May, 00:00first Monday in October, 00:001 hour, NST to NDT
1939May 15October 21 hour, NST to NDT
1940–1941second Monday in May, 00:00first Monday in October, 00:001 hour, NST to NDT
1942May 11not that year1 hour, NST to NWT
1945not that yearSeptember 301 hour
1946–1949second Sunday in May, 02:00first Sunday in October, 02:001 hour, NST to NDT
1950May 14October 81 hour, NST to NDT
1951–1959last Sunday in April, 02:00last Sunday in September, 02:001 hour, NST to NDT
1960–1986last Sunday in April, 02:00last Sunday in October, 02:001 hour, NST to NDT
Since 1970
1987April 5October 251 hour, AST to ADT
1988April 3October 302 hours, AST to ADDT
1989–2006first Sunday in April, 00:01last Sunday in October, 00:011 hour, AST to ADT
2007–2037second Sunday in March, 00:01first Sunday in November, 00:011 hour, AST to ADT

Clock changes in 2026, 2027 and 2028

The clocks go forward 1 hour (AST to ADT) on March 8, 2026, March 14, 2027 and March 12, 2028 at 02:00 and back 1 hour (ADT to AST) on November 1, 2026, November 7, 2027 and November 5, 2028 at 02:00, local time.

Also on UTC−4

Glace Bay (Canada), Moncton (Canada), Halifax (Canada), Bermuda, Pituffik (Thule) (Greenland), Puerto Rico, Dominican Republic, Martinique, Barbados and Venezuela (nearest first; 8 more on the list of offsets).

Clocks next door since 1970

  • Saint Pierre and Miquelon (756 km): usually 1 hour ahead; different on 5,270 days in 1970–2026.
  • Glace Bay (794 km): same time except 585 days in 1970, 1971 and 1987–2011.
  • St. John’s (841 km): usually 30 minutes ahead; different on 2 days in 1970–2026.
  • Moncton (863 km): same time except 394 days in 1973, 1987–1992 and 2007–2011.
  • Halifax (993 km): same time except 214 days in 1987–2011.

How it compares

Goose Bay left local mean time (UTC−4:01:40) in 1884, the second-earliest switch of the 19 zones on UTC−4 standard time.

Standard time has stayed at UTC−4 since 1966.

On standard time, clocks in Goose Bay run 2 minutes ahead of local mean solar time.