Newfoundland Time
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The Newfoundland Time Zone (NT) is a geographic region that keeps time by subtracting 3.5 hours from Coordinated Universal Time ( UTC) during
standard time Standard time is the synchronization of clocks within a geographical region to a single time standard, rather than a local mean time standard. Generally, standard time agrees with the local mean time at some meridian that passes through the r ...
, resulting in UTC−03:30; or subtracting 2.5 hours during daylight saving time. The clock time in this zone is based on the
mean solar time Solar time is a calculation of the passage of time based on the position of the Sun in the sky. The fundamental unit of solar time is the day, based on the synodic rotation period. Traditionally, there are three types of time reckoning based ...
of the meridian 52 degrees and 30 arcminutes west of the Greenwich Observatory. It is observed solely in the Canadian province of
Newfoundland and Labrador Newfoundland and Labrador is the easternmost province of Canada, in the country's Atlantic region. The province comprises the island of Newfoundland and the continental region of Labrador, having a total size of . As of 2025 the populatio ...
. The Newfoundland Time Zone is the only active time zone with a half-hour offset from UTC in the Americas.


Scope

Officially, per
Newfoundland and Labrador Newfoundland and Labrador is the easternmost province of Canada, in the country's Atlantic region. The province comprises the island of Newfoundland and the continental region of Labrador, having a total size of . As of 2025 the populatio ...
provincial law, the entire province observes Newfoundland Time. In practice, however, Newfoundland Time is observed only on the island of Newfoundland, its smaller offshore islands, and the southeastern
Labrador Labrador () is a geographic and cultural region within the Canadian province of Newfoundland and Labrador. It is the primarily continental portion of the province and constitutes 71% of the province's area but is home to only 6% of its populatio ...
communities including and south of Black Tickle. The rest of Labrador, from Cartwright north and west, observes Atlantic Time along with the rest of
Atlantic Canada Atlantic Canada, also called the Atlantic provinces (), is the list of regions of Canada, region of Eastern Canada comprising four provinces: New Brunswick, Newfoundland and Labrador, Nova Scotia, and Prince Edward Island. As of 2021, the landma ...
. Southeastern Labrador prefers Newfoundland Time in part to synchronize with the schedule of radio broadcasts from Newfoundland. This time zone exists because of the location of the island and the fact that it was a separate
dominion A dominion was any of several largely self-governance, self-governing countries of the British Empire, once known collectively as the ''British Commonwealth of Nations''. Progressing from colonies, their degrees of self-governing colony, colon ...
when time zones were established. Newfoundland lies squarely in the eastern half of the Atlantic Time Zone, with St. John's being exactly three-and-a-half hours from Greenwich. Since the
Dominion of Newfoundland Newfoundland was a British dominion in eastern North America, today the modern Canadian province of Newfoundland and Labrador. It included the island of Newfoundland, and Labrador on the continental mainland. Newfoundland was one of the orig ...
was separate from Canada, it had the right to adopt its own time zone when time zones were first created. While the entire province lies west of the standard meridian for a half-hour time zone, 52.5 degrees west longitude, this is also the near exact meridian of St. John's, the province's capital and largest city. In 1935, the Newfoundland Commission of Government adopted a Standard Time Act which set standard time across the Dominion of Newfoundland at 3.5 hours behind
Greenwich Mean Time Greenwich Mean Time (GMT) is the local mean time at the Royal Observatory, Greenwich, Royal Observatory in Greenwich, London, counted from midnight. At different times in the past, it has been calculated in different ways, including being ...
(GMT). In 1963, the Newfoundland government attempted to move the province to Atlantic Time in tandem with the rest of Atlantic Canada, but withdrew in the face of stiff public opposition. Daylight saving time is observed throughout the province. In 1988, the provincial government experimented with double daylight saving time, moving clocks ahead two hours during daylight saving time instead of just one. However, this forced children to go to school in the dark in October. In 2006, the province enacted an extension to daylight saving time, starting in 2007, following the lead of the United States and other Canadian provinces. This unusual time zone puts the island of Newfoundland an hour and a half ahead of
Central Canada Central Canada (, sometimes the ''Central Provinces'') is a Canadian region consisting of Ontario and Quebec, the largest and most populous provinces of the country. Geographically, they are not at the centre of Canada but instead overlap wi ...
, a half hour ahead of the rest of Atlantic Canada, and half an hour behind Saint-Pierre and Miquelon. Because of this, it will hit milestones of time before (almost) any other part of the continent, a quirk that draws attention to Newfoundland. For instance, the Newfoundland releases of '' Harry Potter and the Half-Blood Prince'' and ''
Halo 2 ''Halo 2'' is a 2004 first-person shooter video game developed by Bungie and published by Microsoft Game Studios for the Xbox console. ''Halo 2'' is the second installment in the ''Halo'' franchise and the sequel to 2001's critically acclai ...
'' were publicized across Canada. Also, it is very common for the lone independently owned-and-operated TV station in the province, CJON-DT (known on-air as "NTV"), to use a "World Television Premiere" bumper at the start of some programming that airs before most other North American stations air them. Likewise, in the case of Canada-wide broadcasts timed to air at the same local hour in the rest of the country through the use of a different feed for each time zone (most commonly the CBC's radio and TV networks), Newfoundland uses Atlantic-time broadcasts. References to programs airing thirty minutes "later" than the Maritimes (e.g. "6:00, 6:30 in Newfoundland") are commonly heard across Canada. However, the province's two full-fledged stations, CJON and CBNT-DT (both based in St. John's), originate local programming with phrasing such as "coming up at 6:00, 5:30 in most of Labrador."


Major metropolitan areas

* St. John's, Newfoundland and Labrador * Corner Brook, Newfoundland and Labrador


See also

*Newfoundland's Daylight Saving Act of 1917


References


External links


Official times across Canada



History of U.S. time zones and UTC conversion




{{North American time zones Time zones Time in Canada Culture of Newfoundland and Labrador