GMT-3:30 Time Zone Countries list - UTC-3:30 Time Now

Where Newfoundland time applies

The offset belongs to one Canadian province, and not even all of it. Places on Newfoundland Standard Time include: St. John's, the provincial capital, along with Mount Pearl and Conception Bay South. Corner Brook and the west coast of the island.

Gander and Grand Falls-Windsor in the interior. The southeastern coast of Labrador, a short stretch of communities that follow the island rather than the mainland. Most of Labrador, including Happy Valley-Goose Bay, uses Atlantic time at UTC−4 instead. So a single province runs two clocks half an hour apart, and the boundary is a coastline rather than a line of longitude.

The summer offset: UTC−2:30

Newfoundland observes daylight saving on the standard North American schedule. From the second Sunday in March to the first Sunday in November, clocks move to Newfoundland Daylight Time at UTC−2:30 — the only regular use of that offset anywhere. The half hour survives the switch intact, which is the point: the province shifts by an hour like its neighbours, without giving up its thirty minutes.

Why half an hour, and why it stayed

The offset reflects local solar time. St. John's lies far enough east of the Atlantic zone's meridian that a whole-hour offset would have put its noon noticeably off the sun. When zones were formalised, the province took the closer fit. Proposals to round it off have surfaced periodically and have not carried.

Newfoundland's half hour is the last standing argument in North America that clocks should follow the sun rather than the boardroom — and it has been winning for a very long time. Practical consequences are mostly small and mostly amusing. National broadcasts are announced as running at a given hour "and half an hour later in Newfoundland". Flight schedules and booking systems occasionally round the offset and get it wrong. And anyone converting by hand has to remember three facts rather than two:

Newfoundland is thirty minutes ahead of Atlantic time, year-round. It is ninety minutes ahead of US Eastern time, in both winter and summer. Its offset is UTC−3:30 in winter and UTC−2:30 in summer.