Newfoundland, Canada is in the Newfoundland Time Zone, 3.5 hours behind Greenwich Mean Time (GMT-3:30).
Many people wonder why Newfoundland has a time zone that is a half hour different rather than one hour. The system of Standard Time employs 24 meridians; each are theoretically the centers of 24 Standard Time zones. Newfoundland lies in the eastern half of its time zone.
Like most provinces in Canada, Daylight Saving Time is observed in Newfoundland, where the time is shifted forward by 1 hour, resulting in a 2.5 hours difference behind Greenwich Mean Time (GMT-2:30).
After the Summer months the time is shifted back by 1 hour resulting in the normal 3.5 hours difference to GMT.
Governmentof Newfoundland website : www.gov.nf.ca
Relevant Statute: here