Halifax to Edmonton
-3hHalifax
ADTSOURCEEdmonton
MDTGreen rows indicate typical business hours (9 AM - 5 PM)
ADT and MDT on the World Map
The map below highlights the ADT (Atlantic Standard Time) and MDT (Mountain Standard Time) timezone regions across the globe.
AST – Atlantic Standard Time
UTC-04:00Atlantic Standard Time (AST) is the time zone for the Canadian Atlantic provinces and the Caribbean, 4 hours behind UTC.
- •Puerto Rico uses AST year-round and does not observe DST.
- •AST is 1 hour ahead of EST.
- •Halifax, the capital of Nova Scotia, is the largest city in AST Canada.
MST – Mountain Standard Time
UTC-07:00Mountain Standard Time (MST) is the time zone for the Mountain region of North America, 7 hours behind UTC.
- •Arizona does not observe daylight saving time, staying on MST year-round.
- •The Navajo Nation in Arizona does observe DST, unlike the rest of the state.
- •Denver, the 'Mile High City', is the largest city fully in MST.
- •MST covers 6 US states entirely and parts of several others.
About Halifax
WikipediaHalifax operates on Atlantic Time (AST/ADT), UTC-4. As Canada's major Atlantic port and closest city to Europe, Halifax bridges North American and European business.
Halifax harbors the second largest natural ice-free harbor in the world.
About Edmonton
WikipediaEdmonton operates on Mountain Time (MST/MDT), same as Denver. As Alberta's capital and an energy hub, Edmonton time aligns with Western Canadian markets.
The city has the most extensive urban parkland in North America.
Everything You Need to Know About Halifax and Edmonton Time
Halifax runs on Atlantic Daylight Time (ADT) at UTC-03:00, currently observing daylight saving time. Edmonton runs on Mountain Daylight Time (MDT) at UTC-06:00, also currently on daylight saving time. That puts Halifax 3 hours behind Edmonton — a difference of -3h at the current offsets.
In practice, when it is 9:00 AM in Halifax it is 6:00 AM in Edmonton. Midnight in Halifax is 9:00 PM in Edmonton. Because both zones shift for daylight saving, the gap between them only changes during the few weeks each year when their transition dates differ.
Halifax to Edmonton time conversion table
| Halifax (ADT) | Edmonton (MDT) | Day |
|---|---|---|
| 12:00 AM | 9:00 PM | previous day |
| 6:00 AM | 3:00 AM | same day |
| 7:00 AM | 4:00 AM | same day |
| 8:00 AM | 5:00 AM | same day |
| 9:00 AM | 6:00 AM | same day |
| 12:00 PM | 9:00 AM | same day |
| 3:00 PM | 12:00 PM | same day |
| 5:00 PM | 2:00 PM | same day |
| 6:00 PM | 3:00 PM | same day |
| 9:00 PM | 6:00 PM | same day |
Why people convert Halifax to Edmonton time
- Scheduling a call from Halifax to Edmonton: a 10:00 AM start in Halifax lands at 7:00 AM in Edmonton, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Halifax and Edmonton are inside the 9-to-5 working day between 12:00 PM and 5:00 PM ADT time (9:00 AM–2:00 PM MDT). That is roughly 5 hours of usable overlap.
- Coordinating a Halifax-based team with Edmonton contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM ADT" is unambiguous; "3 PM" across a -3h gap is not.
- Block 12:00 PM–5:00 PM ADT as the recurring meeting window if you work primarily from Halifax and need Edmonton colleagues present.
- Halifax: Clocks fall back on Sun, Nov 1, 2026. Re-check this page after that date because the offset changes and so does the -3h gap.
- Edmonton: Clocks fall back on Sun, Nov 1, 2026. Any meeting series spanning that date will shift by an hour in local time.
About AST (Atlantic Standard Time)
Atlantic Standard Time (AST) covers Canada's Atlantic provinces (Nova Scotia, New Brunswick, Prince Edward Island, and most of Labrador), as well as several Caribbean nations. Puerto Rico and the US Virgin Islands use AST year-round without daylight saving time. The Canadian provinces switch to Atlantic Daylight Time (ADT) in summer.
About MST (Mountain Standard Time)
Mountain Standard Time (MST) covers the Rocky Mountain region of the United States and Canada. Arizona is notable for not observing daylight saving time, staying on MST year-round (except the Navajo Nation). The time zone includes major cities like Denver, Phoenix, Calgary, and Salt Lake City. During summer, most areas switch to Mountain Daylight Time (MDT, UTC-06:00).
Best time to call between Halifax and Edmonton
Both Halifax and Edmonton sit inside the 9 AM – 5 PM working day between 12:00 PM–5:00 PM ADT, which is 9:00 AM–2:00 PM MDT. That gives roughly 5 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Halifax and Edmonton share 5 hours of working-hours overlap (12:00 PM–5:00 PM ADT), so scheduling a live meeting is straightforward.
Halifax is 3 hours behind Edmonton (ADT UTC-03:00 → MDT UTC-06:00). The shared working window is 12:00 PM–5:00 PM ADT. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Halifax
☀ Currently in DST
Standard: UTC-04:00 · DST: UTC-03:00
Clocks fall back on Sun, Nov 1, 2026
Edmonton
☀ Currently in DST
Standard: UTC-07:00 · DST: UTC-06:00
Clocks fall back on Sun, Nov 1, 2026
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between Halifax and Edmonton?
Halifax (ADT, UTC-03:00) is 3 hours behind Edmonton (MDT, UTC-06:00). The gap is currently -3h.
How do I convert Halifax time to Edmonton time?
Add -3h to Halifax local time. For example, 9:00 AM in Halifax is 6:00 AM in Edmonton.
What time is it in Edmonton right now?
Edmonton uses MDT at UTC-06:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -3h offset from Halifax.
What is the best time to call Edmonton from Halifax?
Call between 12:00 PM and 5:00 PM ADT — that maps to 9:00 AM–2:00 PM MDT and keeps both parties inside the working day.
Which is behind, Halifax or Edmonton?
Halifax is 3 hours behind Edmonton. When it is 12:00 PM in Halifax it is 9:00 AM in Edmonton.
Do Halifax and Edmonton use different time zones?
Halifax (Canada) uses ADT at UTC-03:00, while Edmonton (Canada) uses MDT at UTC-06:00. The IANA identifiers are America/Halifax and America/Edmonton.
Does daylight saving time affect the Halifax–Edmonton difference?
Both zones observe DST, so the difference stays at -3h for most of the year and only changes during the weeks when their transition dates do not line up.
Which other cities share Halifax's time zone?
ADT also covers Halifax, San Juan, Santo Domingo, Caracas, La Paz, Fredericton, Charlottetown.
Which countries use ADT, Halifax's zone?
ADT is used in Canada (Atlantic provinces), Puerto Rico, US Virgin Islands, Dominican Republic, Venezuela, Bolivia, Barbados, Trinidad and Tobago.
Is there a day difference between Halifax and Edmonton?
Not normally. The -3h gap only pushes the date over the previous day.
What is the time difference between Halifax and Edmonton?
Edmonton is -3h from Halifax.
What timezone is Halifax in?
Halifax operates on Atlantic Time (AST/ADT), UTC-4. As Canada's major Atlantic port and closest city to Europe, Halifax bridges North American and European business.
What timezone is Edmonton in?
Edmonton operates on Mountain Time (MST/MDT), same as Denver. As Alberta's capital and an energy hub, Edmonton time aligns with Western Canadian markets.
What are the business hours in Halifax?
Standard business hours in Halifax are 9:00 AM - 5:00 PM AST.
What are the business hours in Edmonton?
Standard business hours in Edmonton are 8:00 AM - 5:00 PM MST.
What is the best time to schedule a call between Halifax and Edmonton?
The best overlap for a call is when both cities are in business hours. Halifax works 9:00 AM - 5:00 PM AST and Edmonton works 8:00 AM - 5:00 PM MST (-3h difference). Try scheduling during the overlapping window for maximum convenience.
How do Halifax and Edmonton compare in size?
Halifax has a population of approximately 440,000 (metro: 465,000), while Edmonton has approximately 1 million (metro: 1.4 million).
What are the major landmarks in Halifax and Edmonton?
Halifax is known for Halifax Citadel, Peggy's Cove, Halifax Waterfront. Edmonton is famous for West Edmonton Mall, Fort Edmonton Park, Art Gallery of Alberta.
Do Halifax and Edmonton have stock exchanges?
Yes. Halifax has the N/A (Uses TSX) and Edmonton has the N/A (Uses TSX). The -3h time difference affects trading hour overlaps between these exchanges.
Which countries use AST (Atlantic Standard Time)?
AST is used in Canada (Atlantic provinces), Puerto Rico, US Virgin Islands, Dominican Republic, Venezuela, Bolivia, and 2 more countries.
Does AST observe daylight saving time?
Yes, AST switches to ADT during summer months.
What are some interesting facts about AST?
Puerto Rico uses AST year-round and does not observe DST. AST is 1 hour ahead of EST.
Which cities are in the MST timezone?
Major cities in the MST timezone include Denver, Phoenix, Salt Lake City, Calgary, Edmonton, Albuquerque, El Paso, Tucson.
What is the UTC offset for MST?
Mountain Standard Time (MST) is at UTC-07:00. During daylight saving time, it shifts to MDT.
What should I know about the MST timezone?
Arizona does not observe daylight saving time, staying on MST year-round. The Navajo Nation in Arizona does observe DST, unlike the rest of the state.
When is it midnight in Halifax, what time is it in Edmonton?
When it is 12:00 AM (midnight) in Halifax (AST), it is -3h later in Edmonton (MST).
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