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 JST

+2h

Jakarta

WIBSOURCE

Indonesia · UTC+07:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

JST

UTC+09:00

HH02

MM00

14:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Jakarta

JST

12:00 AM

2:00 AM

4:00 AM

6:00 AM

8:00 AM

10:00 AM

12:00 PM

2:00 PM

4:00 PM

6:00 PM

8:00 PM

10:00 PM

12:00 AM+1

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

WIB and JST on the World Map

The map below highlights the WIB (Western Indonesia Time) and JST (Japan Standard Time) timezone regions across the globe.

WIB Zone

→

JST 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

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

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 →

Jakarta to JST Time Difference – Complete Guide

Jakarta runs on Western Indonesia Time (WIB) at UTC+07:00. JST runs on Japan Standard Time (JST) at UTC+09:00. That puts Jakarta 2 hours ahead of JST — a difference of +2h at the current offsets.

In practice, when it is 9:00 AM in Jakarta it is 11:00 AM in JST. Midnight in Jakarta is 2:00 AM in JST. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Jakarta to JST time conversion table

Jakarta (WIB)	JST (JST)	Day
12:00 AM	2:00 AM	same day
6:00 AM	8:00 AM	same day
7:00 AM	9:00 AM	same day
8:00 AM	10:00 AM	same day
9:00 AM	11:00 AM	same day
12:00 PM	2:00 PM	same day
3:00 PM	5:00 PM	same day
5:00 PM	7:00 PM	same day
6:00 PM	8:00 PM	same day
9:00 PM	11:00 PM	same day

Why people convert Jakarta to JST time

Scheduling a call from Jakarta to JST: a 10:00 AM start in Jakarta lands at 12:00 PM in JST, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Jakarta and JST are inside the 9-to-5 working day between 9:00 AM and 3:00 PM WIB time (11:00 AM–5:00 PM JST). That is roughly 6 hours of usable overlap.
Keeping family and friends in sync: knowing that 8:00 PM in Jakarta is 10:00 PM in JST makes it easy to avoid calling at 3 AM.

Always state the zone abbreviation, not just the hour. "3:00 PM WIB" is unambiguous; "3 PM" across a +2h gap is not.
Block 9:00 AM–3:00 PM WIB as the recurring meeting window if you work primarily from Jakarta and need JST 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 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.

Best time to call between Jakarta and JST

Both Jakarta and JST sit inside the 9 AM – 5 PM working day between 9:00 AM–3:00 PM WIB, which is 11:00 AM–5:00 PM JST. That gives roughly 6 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

Jakarta and JST share 6 hours of working-hours overlap (9:00 AM–3:00 PM WIB), so scheduling a live meeting is straightforward.

Jakarta is 2 hours ahead of JST (WIB UTC+07:00 → JST UTC+09:00). The shared working window is 9:00 AM–3:00 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 JST?

Jakarta (WIB, UTC+07:00) is 2 hours ahead of JST (JST, UTC+09:00). The gap is currently +2h.

How do I convert Jakarta time to JST time?

Add +2h to Jakarta local time. For example, 9:00 AM in Jakarta is 11:00 AM in JST.

What time is it in JST right now?

JST uses JST at UTC+09:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +2h offset from Jakarta.

What is the best time to call JST from Jakarta?

Call between 9:00 AM and 3:00 PM WIB — that maps to 11:00 AM–5:00 PM JST and keeps both parties inside the working day.

Which is ahead, Jakarta or JST?

Jakarta is 2 hours ahead of JST. When it is 12:00 PM in Jakarta it is 2:00 PM in JST.

Do Jakarta and JST use different time zones?

Jakarta (Indonesia) uses WIB at UTC+07:00, while JST uses JST at UTC+09:00. The IANA identifiers are Asia/Jakarta and Asia/Tokyo.

Does daylight saving time affect the Jakarta–JST difference?

Neither zone observes daylight saving time, so the +2h offset between Jakarta and JST 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 JST?

Not normally. The +2h gap only pushes the date over for late-evening times.

What is the time difference between Jakarta and JST?

JST is +2h 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 JST in?

JST operates on its local timezone.

What are the business hours in Jakarta?

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

Which countries use WIB (Western Indonesia Time)?

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

Does WIB observe daylight saving time?

No, WIB does not observe daylight saving time and remains at UTC+07:00 year-round.

What are some interesting 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.

Which cities are in the JST timezone?

Major cities in the JST timezone include Tokyo, Osaka, Yokohama, Nagoya, Sapporo, Kyoto, Kobe, Fukuoka.

What is the UTC offset for JST?

Japan Standard Time (JST) is at UTC+09:00.

What should I know about the JST timezone?

Japan does not observe daylight saving time. Tokyo is the most populous metropolitan area in the world.

When is it midnight in Jakarta, what time is it in JST?

When it is 12:00 AM (midnight) in Jakarta (WIB), it is +2h later in JST (JST).

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Jakarta to JST

Jakarta

JST

WIB and JST on the World Map

WIB – Western Indonesia Time

JST – Japan Standard Time

About Jakarta

Jakarta to JST Time Difference – Complete Guide

Jakarta to JST time conversion table

Why people convert Jakarta to JST time

About WIB (Western Indonesia Time)

About JST (Japan Standard Time)

Best time to call between Jakarta and JST

Business hours overlap

Learn More About Time

Frequently Asked Questions

What is the time difference between Jakarta and JST?

How do I convert Jakarta time to JST time?

What time is it in JST right now?

What is the best time to call JST from Jakarta?

Which is ahead, Jakarta or JST?

Do Jakarta and JST use different time zones?

Does daylight saving time affect the Jakarta–JST difference?

Which other cities share Jakarta's time zone?

Which countries use WIB, Jakarta's zone?

Is there a day difference between Jakarta and JST?

What is the time difference between Jakarta and JST?

What timezone is Jakarta in?

What timezone is JST in?

What are the business hours in Jakarta?

Which countries use WIB (Western Indonesia Time)?

Does WIB observe daylight saving time?

What are some interesting facts about WIB?

Which cities are in the JST timezone?

What is the UTC offset for JST?

What should I know about the JST timezone?

When is it midnight in Jakarta, what time is it in JST?

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