n. — abbreviation, Science, especially Newfoundland
the initialism for Newfoundland Daylight Time.
Type: 1. Origin — NDT appears much later in print than Newfoundland daylight time or the comparatively recent Newfoundland Daylight Time. The term is most prevalent in Canada (see Chart 1), especially in Newfoundland (see Chart 2). The names for the other time zones in Canada are also used in the US, but Newfoundland is further east than any other land mass in North America and so has a time zone that is half an hour ahead of the rest of the continent.
See COD-2, which lists the term but does not label it in any way.
See also: Newfoundland Daylight Time Newfoundland Time Standard Time
- 1970  Tonight, Suicide: Who Owns My Life? We kill through war, starvation, stupidity, yet taking one's own life is taboo. Is suicide the ultimate civil liberty? October 28, 6:30 pm edt, pdt; 7:30 adt, cdt, Sask., mst; 7:00 ndt.
- 1987  By the time Hudson reached the sinking ship, at about 10:00 p.m. NDT, the seas had calmed to about two metres (6.5 feet) from 16 (52 feet). 
- 2011  June 18, Newfoundland Daylight Time 6) Newfoundland 6:30-7:30 a.m. NDT June 18, Atlantic Daylight Time 
- 2015  Media will be provided with a photo opportunity with premiers at the opening of the meeting at 12:30 p.m. (NDT) in the Tupper Room. 
Images:
Chart 1: Internet Domain Search, 27 Jun. 2013
Chart 2: Regional Domain Search, 27 Jun. 2013