Does it account for Daylight Saving Time?

Yes, our converter uses the IANA timezone database, which includes all current DST rules for every timezone in the world.

UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. All timezones are defined as offsets from UTC.

Can I compare multiple timezones at once?

Yes, you can add multiple cities or timezones and see the equivalent times side by side.

How many timezones are there in the world?

There are 38 distinct UTC offsets in use, ranging from UTC-12 to UTC+14. This includes half-hour (UTC+5:30 India, UTC+9:30 Australia) and 45-minute offsets (UTC+5:45 Nepal, UTC+8:45 Australia).

What is the International Date Line?

The International Date Line (IDL) runs roughly along the 180° meridian in the Pacific Ocean. When you cross it westward, you gain a day; crossing eastward, you lose a day.

Why do some timezones have 30 or 45 minute offsets?

Countries chose offsets that best matched their solar noon. India uses UTC+5:30 and Nepal uses UTC+5:45 because standard hourly offsets didn't align well with their geography.

Which country has the most timezones?

France has the most (12 timezones) due to overseas territories. Russia spans 11 timezones. The US has 6 (including Hawaii and Alaska).

Edmonton to Seoul

+15h

Edmonton

MDTSOURCE

Canada · UTC-06:00☀ DST active

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Seoul

KST

South Korea · UTC+09:00

HH03

MM00

(next day)03:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Edmonton

Seoul

12:00 AM

3:00 PM

2:00 AM

5:00 PM

4:00 AM

7:00 PM

6:00 AM

9:00 PM

8:00 AM

11:00 PM

10:00 AM

1:00 AM+1

12:00 PM

3:00 AM+1

2:00 PM

5:00 AM+1

4:00 PM

7:00 AM+1

6:00 PM

9:00 AM+1

8:00 PM

11:00 AM+1

10:00 PM

1:00 PM+1

Green rows indicate typical business hours (9 AM - 5 PM)

MDT and KST on the World Map

The map below highlights the MDT (Mountain Standard Time) and KST (Korea Standard Time) timezone regions across the globe.

MDT Zone

→

KST Zone

Explore all world timezones interactively →

MST – Mountain Standard Time

UTC-07:00

Mountain Standard Time (MST) is the time zone for the Mountain region of North America, 7 hours behind UTC.

Countries in MST

United States (Mountain)Canada (Alberta)Mexico (Chihuahua, Sonora)

Major Cities in MST

DenverPhoenixSalt Lake CityCalgaryEdmontonAlbuquerqueEl PasoTucsonBoiseCiudad Juárez

Key Facts about MST

•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.

Daylight Saving:Yes – switches to MDT

Learn more about MST on Wikipedia

KST – Korea Standard Time

UTC+09:00

Korea Standard Time (KST) is the time zone for South Korea, 9 hours ahead of UTC.

Countries in KST

South KoreaNorth Korea

Major Cities in KST

SeoulBusanIncheonDaeguDaejeonPyongyang

Key Facts about KST

•South Korea does not observe daylight saving time.
•Seoul is home to Samsung, LG, and Hyundai headquarters.
•KST is the same offset as JST (UTC+09:00).

Daylight Saving:No – UTC+09:00 year-round

Learn more about KST on Wikipedia

About Edmonton

Wikipedia

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.

Population:1 million

Metro:1.4 million

Business Hours:8:00 AM - 5:00 PM MST

Currency:CAD (C$)

Stock Exchange:N/A (Uses TSX)

Key Landmarks

West Edmonton MallFort Edmonton ParkArt Gallery of AlbertaMuttart ConservatoryRiver Valley

Did You Know?

The city has the most extensive urban parkland in North America.

Learn more about MDT timezone →

About Seoul

Wikipedia

Seoul operates on Korea Standard Time (KST), UTC+9, same as Japan. As a global tech and entertainment hub, Seoul coordinates with East Asian markets.

Population:9.7 million

Metro:25.5 million

Business Hours:9:00 AM - 6:00 PM KST

Currency:KRW (₩)

Stock Exchange:KRX (Korea Exchange)

Key Landmarks

Gyeongbokgung PalaceN Seoul TowerBukchon Hanok VillageDongdaemun Design PlazaCheonggyecheon Stream

Did You Know?

Seoul has the fastest average internet speed in the world.

Learn more about KST timezone →

Edmonton vs Seoul: Offsets, DST and Best Call Times

Edmonton runs on Mountain Daylight Time (MDT) at UTC-06:00, currently observing daylight saving time. Seoul runs on Korean Standard Time (KST) at UTC+09:00. That puts Edmonton 15 hours ahead of Seoul — a difference of +15h at the current offsets.

In practice, when it is 9:00 AM in Edmonton it is 12:00 AM in Seoul on the next day. Midnight in Edmonton is 3:00 PM in Seoul.Edmonton observes daylight saving time while Seoul does not, so the gap narrows or widens by an hour part of the year.

Edmonton to Seoul time conversion table

Edmonton (MDT)	Seoul (KST)	Day
12:00 AM	3:00 PM	same day
6:00 AM	9:00 PM	same day
7:00 AM	10:00 PM	same day
8:00 AM	11:00 PM	same day
9:00 AM	12:00 AM	next day
12:00 PM	3:00 AM	next day
3:00 PM	6:00 AM	next day
5:00 PM	8:00 AM	next day
6:00 PM	9:00 AM	next day
9:00 PM	12:00 PM	next day

Why people convert Edmonton to Seoul time

Scheduling a call from Edmonton to Seoul: a 10:00 AM start in Edmonton lands at 1:00 AM in Seoul the next day, so you can confirm the slot without doing the arithmetic yourself.
Handling a +15h gap: Edmonton and Seoul have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in Seoul is 12:00 AM in Edmonton.
Coordinating a Edmonton-based team with Seoul 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 MDT" is unambiguous; "3 PM" across a +15h gap is not.
With a +15h gap there is no shared 9-to-5 window, so alternate the early start: one week Edmonton takes the early slot, the next week Seoul does.
Edmonton: Clocks fall back on Sun, Nov 1, 2026. Re-check this page after that date because the offset changes and so does the +15h gap.

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).

About KST (Korea Standard Time)

Korea Standard Time (KST) is the time zone used in South Korea. It shares the same UTC offset as Japan Standard Time but is a distinct time zone. South Korea does not observe daylight saving time. Seoul, the capital, is a major global tech and business hub.

Best time to call between Edmonton and Seoul

With a +15h offset there is no overlap inside a normal 9 AM – 5 PM day. Seoul opens at 9:00 AM KST, which is 12:00 AM in Edmonton, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

Edmonton and Seoul have no shared working hours because of the +15h gap. Teams need to alternate early starts or rely on asynchronous handovers.

Edmonton is 15 hours ahead of Seoul (MDT UTC-06:00 → KST UTC+09:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

Edmonton

☀ Currently in DST

Standard: UTC-07:00 · DST: UTC-06:00

Clocks fall back on Sun, Nov 1, 2026

Seoul

Does not observe DST

Learn More About Time

Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:

⏳

History of Timekeeping

From sundials to atomic clocks - 5000 years of measuring time

🌍

How Time Zones Work

UTC, offsets, and why zones don't follow straight lines

☀️

Daylight Saving Time

DST dates, which countries observe it, and the ongoing debate

Frequently Asked Questions

What is the time difference between Edmonton and Seoul?

Edmonton (MDT, UTC-06:00) is 15 hours ahead of Seoul (KST, UTC+09:00). The gap is currently +15h.

How do I convert Edmonton time to Seoul time?

Add +15h to Edmonton local time. For example, 9:00 AM in Edmonton is 12:00 AM in Seoul (next day).

What time is it in Seoul right now?

Seoul uses KST at UTC+09:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +15h offset from Edmonton.

What is the best time to call Seoul from Edmonton?

There is no shared working-hours window because of the +15h gap. The closest option is 1:00 PM in Edmonton, which is 4:00 AM in Seoul.

Which is ahead, Edmonton or Seoul?

Edmonton is 15 hours ahead of Seoul. When it is 12:00 PM in Edmonton it is 3:00 AM in Seoul.

Do Edmonton and Seoul use different time zones?

Edmonton (Canada) uses MDT at UTC-06:00, while Seoul (South Korea) uses KST at UTC+09:00. The IANA identifiers are America/Edmonton and Asia/Seoul.

Does daylight saving time affect the Edmonton–Seoul difference?

Yes at the moment: Edmonton is on daylight saving time and Seoul is not, so the +15h gap shifts by an hour when exactly one of them changes clocks.

Which other cities share Edmonton's time zone?

MDT also covers Denver, Phoenix, Salt Lake City, Calgary, Edmonton, Albuquerque, El Paso, Tucson and 2 more.

Which countries use MDT, Edmonton's zone?

MDT is used in United States (Mountain), Canada (Alberta), Mexico (Chihuahua, Sonora).

Is there a day difference between Edmonton and Seoul?

Sometimes. The +15h gap is large enough that 8:00 PM or later in Edmonton already falls on the next day in Seoul.

What is the time difference between Edmonton and Seoul?

Seoul is +15h from Edmonton.

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 timezone is Seoul in?

Seoul operates on Korea Standard Time (KST), UTC+9, same as Japan. As a global tech and entertainment hub, Seoul coordinates with East Asian markets.

What are the business hours in Edmonton?

Standard business hours in Edmonton are 8:00 AM - 5:00 PM MST.

What are the business hours in Seoul?

Standard business hours in Seoul are 9:00 AM - 6:00 PM KST.

What is the best time to schedule a call between Edmonton and Seoul?

The best overlap for a call is when both cities are in business hours. Edmonton works 8:00 AM - 5:00 PM MST and Seoul works 9:00 AM - 6:00 PM KST (+15h difference). Try scheduling during the overlapping window for maximum convenience.

What currencies are used in Edmonton and Seoul?

Edmonton uses CAD (C$) while Seoul uses KRW (₩). Check current exchange rates when planning travel or business between these cities.

How do Edmonton and Seoul compare in size?

Edmonton has a population of approximately 1 million (metro: 1.4 million), while Seoul has approximately 9.7 million (metro: 25.5 million).

What are the major landmarks in Edmonton and Seoul?

Edmonton is known for West Edmonton Mall, Fort Edmonton Park, Art Gallery of Alberta. Seoul is famous for Gyeongbokgung Palace, N Seoul Tower, Bukchon Hanok Village.

Do Edmonton and Seoul have stock exchanges?

Yes. Edmonton has the N/A (Uses TSX) and Seoul has the KRX (Korea Exchange). The +15h time difference affects trading hour overlaps between these exchanges.

Which countries use MST (Mountain Standard Time)?

MST is used in United States (Mountain), Canada (Alberta), Mexico (Chihuahua, Sonora).

Does MST observe daylight saving time?

Yes, MST switches to MDT during summer months.

What are some interesting facts about MST?

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.