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).

Osaka to Dubai

-5h

Osaka

JSTSOURCE

Japan · UTC+09:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Dubai

GST

UAE · UTC+04:00

HH07

MM00

07:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Osaka

Dubai

12:00 AM

7:00 PM-1

2:00 AM

9:00 PM-1

4:00 AM

11:00 PM-1

6:00 AM

1:00 AM

8:00 AM

3:00 AM

10:00 AM

5:00 AM

12:00 PM

7:00 AM

2:00 PM

9:00 AM

4:00 PM

11:00 AM

6:00 PM

1:00 PM

8:00 PM

3:00 PM

10:00 PM

5:00 PM

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

JST and GST on the World Map

The map below highlights the JST (Japan Standard Time) and GST (Gulf Standard Time) timezone regions across the globe.

JST Zone

→

GST Zone

Explore all world timezones interactively →

JST – Japan Standard Time

UTC+09:00

Japan Standard Time (JST) is the time zone for Japan, 9 hours ahead of UTC.

Countries in JST

Japan

Major Cities in JST

TokyoOsakaYokohamaNagoyaSapporoKyotoKobeFukuokaHiroshima

Key Facts about JST

•Japan does not observe daylight saving time.
•Tokyo is the most populous metropolitan area in the world.
•The Tokyo Stock Exchange operates from 9:00 AM to 3:00 PM JST.
•JST is 14 hours ahead of EST and 9 hours ahead of GMT.

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

Learn more about JST on Wikipedia

GST – Gulf Standard Time

UTC+04:00

Gulf Standard Time (GST) is used in the UAE, Oman, and other Gulf states, 4 hours ahead of UTC.

Countries in GST

UAEOmanGeorgiaAzerbaijanMauritius

Major Cities in GST

DubaiAbu DhabiMuscatBakuTbilisi

Key Facts about GST

•Dubai uses GST year-round with no daylight saving time.
•GST is 9 hours ahead of EST and 4 hours ahead of GMT.
•The Dubai Financial Market (DFM) operates on GST.

Daylight Saving:No – UTC+04:00 year-round

Learn more about GST on Wikipedia

About Osaka

Wikipedia

Osaka operates on Japan Standard Time (JST), UTC+9. As Japan's second economic center and a manufacturing hub, Osaka shares business hours with Tokyo.

Population:2.8 million

Metro:19 million

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

Currency:JPY (¥)

Stock Exchange:OSE (Osaka Exchange - derivatives)

Key Landmarks

Osaka CastleDotonboriUniversal Studios JapanShitennoji TempleUmeda Sky Building

Did You Know?

Osaka Castle was originally built in 1583 and has been rebuilt several times.

Learn more about JST timezone →

About Dubai

Wikipedia

Dubai operates on Gulf Standard Time (GST), 4 hours ahead of GMT. Dubai's position between Europe and Asia makes it a strategic hub for international business.

Population:3.5 million

Metro:4.1 million

Business Hours:8:00 AM - 6:00 PM GST

Currency:AED (د.إ)

Stock Exchange:DFM (Dubai Financial Market)

Key Landmarks

Burj KhalifaPalm JumeirahBurj Al ArabDubai MallDubai Frame

Did You Know?

Dubai has no income tax, making it a major hub for international business.

Learn more about GST timezone →

Osaka vs Dubai: Offsets, DST and Best Call Times

Osaka runs on Japan Standard Time (JST) at UTC+09:00. Dubai runs on Gulf Standard Time (GST) at UTC+04:00. That puts Osaka 5 hours behind Dubai — a difference of -5h at the current offsets.

In practice, when it is 9:00 AM in Osaka it is 4:00 AM in Dubai. Midnight in Osaka is 7:00 PM in Dubai. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Osaka to Dubai time conversion table

Osaka (JST)	Dubai (GST)	Day
12:00 AM	7:00 PM	previous day
6:00 AM	1:00 AM	same day
7:00 AM	2:00 AM	same day
8:00 AM	3:00 AM	same day
9:00 AM	4:00 AM	same day
12:00 PM	7:00 AM	same day
3:00 PM	10:00 AM	same day
5:00 PM	12:00 PM	same day
6:00 PM	1:00 PM	same day
9:00 PM	4:00 PM	same day

Why people convert Osaka to Dubai time

Scheduling a call from Osaka to Dubai: a 10:00 AM start in Osaka lands at 5:00 AM in Dubai, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Osaka and Dubai are inside the 9-to-5 working day between 2:00 PM and 5:00 PM JST time (9:00 AM–12:00 PM GST). That is roughly 3 hours of usable overlap.
Keeping family and friends in sync: knowing that 8:00 PM in Osaka is 3:00 PM in Dubai makes it easy to avoid calling at 3 AM.

Always state the zone abbreviation, not just the hour. "3:00 PM JST" is unambiguous; "3 PM" across a -5h gap is not.
Block 2:00 PM–5:00 PM JST as the recurring meeting window if you work primarily from Osaka and need Dubai colleagues present.

About JST (Japan Standard Time)

Japan Standard Time (JST) is the standard time zone for all of Japan. Japan does not observe daylight saving time. JST is 9 hours ahead of UTC and 14 hours ahead of EST. The Tokyo Stock Exchange, the world's third largest by market capitalization, operates on JST. South Korea uses the same offset (KST) but it is a distinct time zone.

About GST (Gulf Standard Time)

Gulf Standard Time (GST) is the time zone used in the United Arab Emirates, Oman, and other Gulf states. GST does not observe daylight saving time. Dubai and Abu Dhabi, major international business and tourism hubs, operate on GST.

Best time to call between Osaka and Dubai

Both Osaka and Dubai sit inside the 9 AM – 5 PM working day between 2:00 PM–5:00 PM JST, which is 9:00 AM–12:00 PM GST. That gives roughly 3 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

Osaka and Dubai overlap for about 3 hours during the working day — enough for meetings if you avoid the edges of the window.

Osaka is 5 hours behind Dubai (JST UTC+09:00 → GST UTC+04:00). The shared working window is 2:00 PM–5:00 PM JST. Remember to re-check around daylight-saving transitions.

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 Osaka and Dubai?

Osaka (JST, UTC+09:00) is 5 hours behind Dubai (GST, UTC+04:00). The gap is currently -5h.

How do I convert Osaka time to Dubai time?

Add -5h to Osaka local time. For example, 9:00 AM in Osaka is 4:00 AM in Dubai.

What time is it in Dubai right now?

Dubai uses GST at UTC+04:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -5h offset from Osaka.

What is the best time to call Dubai from Osaka?

Call between 2:00 PM and 5:00 PM JST — that maps to 9:00 AM–12:00 PM GST and keeps both parties inside the working day.

Which is behind, Osaka or Dubai?

Osaka is 5 hours behind Dubai. When it is 12:00 PM in Osaka it is 7:00 AM in Dubai.

Do Osaka and Dubai use different time zones?

Osaka (Japan) uses JST at UTC+09:00, while Dubai (UAE) uses GST at UTC+04:00. The IANA identifiers are Asia/Tokyo and Asia/Dubai.

Does daylight saving time affect the Osaka–Dubai difference?

Neither zone observes daylight saving time, so the -5h offset between Osaka and Dubai is fixed all year.

Which other cities share Osaka's time zone?

JST also covers Tokyo, Osaka, Yokohama, Nagoya, Sapporo, Kyoto, Kobe, Fukuoka and 1 more.

Which countries use JST, Osaka's zone?

JST is used in Japan.

Is there a day difference between Osaka and Dubai?

Not normally. The -5h gap only pushes the date over the previous day.

What is the time difference between Osaka and Dubai?

Dubai is -5h from Osaka.

What timezone is Osaka in?

Osaka operates on Japan Standard Time (JST), UTC+9. As Japan's second economic center and a manufacturing hub, Osaka shares business hours with Tokyo.

What timezone is Dubai in?

Dubai operates on Gulf Standard Time (GST), 4 hours ahead of GMT. Dubai's position between Europe and Asia makes it a strategic hub for international business.

What are the business hours in Osaka?

Standard business hours in Osaka are 9:00 AM - 6:00 PM JST.

What are the business hours in Dubai?

Standard business hours in Dubai are 8:00 AM - 6:00 PM GST.

What is the best time to schedule a call between Osaka and Dubai?

The best overlap for a call is when both cities are in business hours. Osaka works 9:00 AM - 6:00 PM JST and Dubai works 8:00 AM - 6:00 PM GST (-5h difference). Try scheduling during the overlapping window for maximum convenience.

What currencies are used in Osaka and Dubai?

Osaka uses JPY (¥) while Dubai uses AED (د.إ). Check current exchange rates when planning travel or business between these cities.

How do Osaka and Dubai compare in size?

Osaka has a population of approximately 2.8 million (metro: 19 million), while Dubai has approximately 3.5 million (metro: 4.1 million).

What are the major landmarks in Osaka and Dubai?

Osaka is known for Osaka Castle, Dotonbori, Universal Studios Japan. Dubai is famous for Burj Khalifa, Palm Jumeirah, Burj Al Arab.

Do Osaka and Dubai have stock exchanges?

Yes. Osaka has the OSE (Osaka Exchange - derivatives) and Dubai has the DFM (Dubai Financial Market). The -5h time difference affects trading hour overlaps between these exchanges.