Time Zone: Upper Hay River 212 lies in the Mountain Time Zone (MST/MDT) and observes daylight saving time. The time zone in French: MST- Heure Normale des Rocheuses (HNR), MDT- Heure Avancée des Rocheuses (HAR).
Area Codes for Upper Hay River 212: 780, 368, 587 & 825<1>
Footnotes ...
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When there's a risk of an area code running out of phone numbers, an 'Overlay Area Code' is created that has the same geographic boundaries as the existing area code. In this case, the 780 code has been Overlayed with one of the following codes: 368, 587 or 825. New phone numbers in the Upper Hay River 212 area will be assigned with one of these codes: 780, 368, 587 or 825. As a result, placing a call in the Upper Hay River 212 area will require 10-digit dialing (where you enter both the area code and then the phone number).