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).

Jakarta to Istanbul

-4h

Jakarta

WIBSOURCE

Indonesia · UTC+07:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Istanbul

TRT

Turkey · UTC+03:00

HH08

MM00

08:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Jakarta

Istanbul

12:00 AM

8:00 PM-1

2:00 AM

10:00 PM-1

4:00 AM

12:00 AM

6:00 AM

2:00 AM

8:00 AM

4:00 AM

10:00 AM

6:00 AM

12:00 PM

8:00 AM

2:00 PM

10:00 AM

4:00 PM

12:00 PM

6:00 PM

2:00 PM

8:00 PM

4:00 PM

10:00 PM

6:00 PM

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

WIB and TRT on the World Map

The map below highlights the WIB (Western Indonesia Time) and TRT (Turkey Time) timezone regions across the globe.

WIB Zone

→

TRT Zone

Explore all world timezones interactively →

WIB – Western Indonesia Time

UTC+07:00

Western Indonesia Time (WIB, UTC+07:00) covers Java, Sumatra and West Kalimantan, including Jakarta.

Countries in WIB

Indonesia (Java, Sumatra, West Kalimantan)

Major Cities in WIB

JakartaSurabayaBandungMedanPalembang

Key Facts about WIB

•Indonesia spans three time zones: WIB (UTC+07:00), WITA (UTC+08:00) and WIT (UTC+09:00).
•Indonesia has not observed daylight saving time since 1964.
•Jakarta is the largest city in Southeast Asia by population.
•WIB shares the UTC+07:00 offset with Indochina Time.

Daylight Saving:No – UTC+07:00 year-round

Learn more about WIB on Wikipedia

TRT – Turkey Time

UTC+03:00

Turkey Time (TRT, UTC+03:00) is the single time zone used across Turkey, fixed year round since 2016.

Countries in TRT

Turkey

Major Cities in TRT

IstanbulAnkaraIzmirBursaAntalya

Key Facts about TRT

•Turkey has used a permanent UTC+03:00 since September 2016.
•TRT is level with Moscow Standard Time and Arabia Standard Time all year.
•Because Turkey kept summer time permanently, western cities see very late winter sunrises.
•Turkey previously observed daylight saving time from 1973 to 2016.

Daylight Saving:No – UTC+03:00 year-round

Learn more about TRT on Wikipedia

About Jakarta

Wikipedia

Jakarta operates on Western Indonesia Time (WIB), UTC+7. As Southeast Asia's largest economy, Jakarta's IDX is a key emerging market exchange.

Population:10.5 million

Metro:34.5 million

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

Currency:IDR (Rp)

Stock Exchange:IDX (Indonesia Stock Exchange)

Key Landmarks

MonasIstiqlal MosqueOld Town (Kota Tua)Taman MiniAncol Dreamland

Did You Know?

Indonesia has 3 time zones; Jakarta uses Western Indonesia Time (WIB).

Learn more about WIB timezone →

About Istanbul

Wikipedia

Istanbul operates on Turkey Time (TRT), UTC+3 year-round. As a transcontinental city, Istanbul bridges European and Asian business hours.

Population:15.5 million

Metro:15.8 million

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

Currency:TRY (₺)

Stock Exchange:Borsa Istanbul

Key Landmarks

Hagia SophiaBlue MosqueTopkapi PalaceGrand BazaarGalata Tower

Did You Know?

The Grand Bazaar is one of the world's oldest and largest covered markets with 4,000+ shops.

Learn more about TRT timezone →

Understanding the -4h Gap: Jakarta vs Istanbul

Jakarta runs on Western Indonesia Time (WIB) at UTC+07:00. Istanbul runs on Türkiye Standard Time (TRT) at UTC+03:00. That puts Jakarta 4 hours behind Istanbul — a difference of -4h at the current offsets.

In practice, when it is 9:00 AM in Jakarta it is 5:00 AM in Istanbul. Midnight in Jakarta is 8:00 PM in Istanbul. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Jakarta to Istanbul time conversion table

Jakarta (WIB)	Istanbul (TRT)	Day
12:00 AM	8:00 PM	previous day
6:00 AM	2:00 AM	same day
7:00 AM	3:00 AM	same day
8:00 AM	4:00 AM	same day
9:00 AM	5:00 AM	same day
12:00 PM	8:00 AM	same day
3:00 PM	11:00 AM	same day
5:00 PM	1:00 PM	same day
6:00 PM	2:00 PM	same day
9:00 PM	5:00 PM	same day

Why people convert Jakarta to Istanbul time

Scheduling a call from Jakarta to Istanbul: a 10:00 AM start in Jakarta lands at 6:00 AM in Istanbul, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Jakarta and Istanbul are inside the 9-to-5 working day between 1:00 PM and 5:00 PM WIB time (9:00 AM–1:00 PM TRT). That is roughly 4 hours of usable overlap.
Coordinating a Jakarta-based team with Istanbul 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 WIB" is unambiguous; "3 PM" across a -4h gap is not.
Block 1:00 PM–5:00 PM WIB as the recurring meeting window if you work primarily from Jakarta and need Istanbul colleagues present.

About WIB (Western Indonesia Time)

Western Indonesia Time (WIB, Waktu Indonesia Barat) is one of Indonesia's three time zones, fixed at UTC+07:00 all year. It covers Java, Sumatra, West Kalimantan and the provinces around them — home to Jakarta, the country's capital and largest city, plus Surabaya and Bandung. Indonesia does not observe daylight saving time, so WIB never shifts. WIB shares its UTC+07:00 offset with Indochina Time (ICT) and Christmas Island Time, but is a distinct zone covering the western half of the Indonesian archipelago. The country's other zones are WITA (UTC+08:00) in the centre and WIT (UTC+09:00) in the east.

About TRT (Turkey Time)

Turkey Time (TRT) is fixed at UTC+03:00 all year. Turkey abolished seasonal clock changes in September 2016, moving to a permanent UTC+03:00 so the whole country stays on what was formerly summer time. That leaves Istanbul, which sits close to 29°E, on an offset well ahead of its solar time — sunrise in mid-winter comes after 08:30 local. TRT shares its offset with Moscow Standard Time, Arabia Standard Time and East Africa Time, so Istanbul is level with Moscow and Riyadh all year and one hour ahead of Central European Time during the European winter.

Best time to call between Jakarta and Istanbul

Both Jakarta and Istanbul sit inside the 9 AM – 5 PM working day between 1:00 PM–5:00 PM WIB, which is 9:00 AM–1:00 PM TRT. That gives roughly 4 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

Jakarta and Istanbul overlap for about 4 hours during the working day — enough for meetings if you avoid the edges of the window.

Jakarta is 4 hours behind Istanbul (WIB UTC+07:00 → TRT UTC+03:00). The shared working window is 1:00 PM–5:00 PM WIB. 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 Jakarta and Istanbul?

Jakarta (WIB, UTC+07:00) is 4 hours behind Istanbul (TRT, UTC+03:00). The gap is currently -4h.

How do I convert Jakarta time to Istanbul time?

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

What time is it in Istanbul right now?

Istanbul uses TRT at UTC+03:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -4h offset from Jakarta.

What is the best time to call Istanbul from Jakarta?

Call between 1:00 PM and 5:00 PM WIB — that maps to 9:00 AM–1:00 PM TRT and keeps both parties inside the working day.

Which is behind, Jakarta or Istanbul?

Jakarta is 4 hours behind Istanbul. When it is 12:00 PM in Jakarta it is 8:00 AM in Istanbul.

Do Jakarta and Istanbul use different time zones?

Jakarta (Indonesia) uses WIB at UTC+07:00, while Istanbul (Turkey) uses TRT at UTC+03:00. The IANA identifiers are Asia/Jakarta and Europe/Istanbul.

Does daylight saving time affect the Jakarta–Istanbul difference?

Neither zone observes daylight saving time, so the -4h offset between Jakarta and Istanbul is fixed all year.

Which other cities share Jakarta's time zone?

WIB also covers Jakarta, Surabaya, Bandung, Medan, Palembang.

Which countries use WIB, Jakarta's zone?

WIB is used in Indonesia (Java, Sumatra, West Kalimantan).

Is there a day difference between Jakarta and Istanbul?

Not normally. The -4h gap only pushes the date over the previous day.

What is the time difference between Jakarta and Istanbul?

Istanbul is -4h from Jakarta.

What timezone is Jakarta in?

Jakarta operates on Western Indonesia Time (WIB), UTC+7. As Southeast Asia's largest economy, Jakarta's IDX is a key emerging market exchange.

What timezone is Istanbul in?

Istanbul operates on Turkey Time (TRT), UTC+3 year-round. As a transcontinental city, Istanbul bridges European and Asian business hours.

What are the business hours in Jakarta?

Standard business hours in Jakarta are 8:00 AM - 5:00 PM WIB.

What are the business hours in Istanbul?

Standard business hours in Istanbul are 9:00 AM - 6:00 PM TRT.

What is the best time to schedule a call between Jakarta and Istanbul?

The best overlap for a call is when both cities are in business hours. Jakarta works 8:00 AM - 5:00 PM WIB and Istanbul works 9:00 AM - 6:00 PM TRT (-4h difference). Try scheduling during the overlapping window for maximum convenience.

What currencies are used in Jakarta and Istanbul?

Jakarta uses IDR (Rp) while Istanbul uses TRY (₺). Check current exchange rates when planning travel or business between these cities.

How do Jakarta and Istanbul compare in size?

Jakarta has a population of approximately 10.5 million (metro: 34.5 million), while Istanbul has approximately 15.5 million (metro: 15.8 million).

What are the major landmarks in Jakarta and Istanbul?

Jakarta is known for Monas, Istiqlal Mosque, Old Town (Kota Tua). Istanbul is famous for Hagia Sophia, Blue Mosque, Topkapi Palace.

Do Jakarta and Istanbul have stock exchanges?

Yes. Jakarta has the IDX (Indonesia Stock Exchange) and Istanbul has the Borsa Istanbul. The -4h time difference affects trading hour overlaps between these exchanges.