Final answer:
Newfoundland and Labrador is the Canadian province with its own unique time zone, known as the Newfoundland Time Zone, set 3.5 hours behind UTC.
Step-by-step explanation:
The province of Canada that has its own unique time zone is Newfoundland and Labrador. This province observes the Newfoundland Time Zone, which is 3.5 hours behind Coordinated Universal Time (UTC-3:30). The existence of this time zone is largely due to the province's geographical positioning, which is significantly eastward compared to other Canadian provinces. Newfoundland and Labrador's distinctive time zone sets it apart and has implications for daily activities, business operations, and communication with other regions. The other provinces listed, such as British Columbia, Nunavut, and Nova Scotia, do not have their own time zones separate from the standard ones used in Canada and North America.