Does it handle Daylight Saving Time?

Yes, the tool automatically adjusts for Daylight Saving Time based on the specific date you select, ensuring accurate conversions year-round.

Can I add multiple cities?

Yes, you can add as many cities as you need to the dashboard to compare times across your entire global network simultaneously.

Jakarta to Tehran

-3h 30m

Jakarta

WIBSOURCE

Indonesia · UTC+07:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Tehran

IRST

Iran · UTC+03:30

HH08

MM30

08:30 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Jakarta

Tehran

12:00 AM

8:30 PM-1

2:00 AM

10:30 PM-1

4:00 AM

12:30 AM

6:00 AM

2:30 AM

8:00 AM

4:30 AM

10:00 AM

6:30 AM

12:00 PM

8:30 AM

2:00 PM

10:30 AM

4:00 PM

12:30 PM

6:00 PM

2:30 PM

8:00 PM

4:30 PM

10:00 PM

6:30 PM

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

WIB and IRST on the World Map

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

WIB Zone

→

IRST 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

IRST – Iran Standard Time

UTC+03:30

Iran Standard Time (IRST) is the time zone for Iran, 3 hours and 30 minutes ahead of UTC.

Countries in IRST

Iran

Major Cities in IRST

TehranIsfahanMashhadTabrizShirazKaraj

Key Facts about IRST

•IRST is one of only a few time zones with a 30-minute offset.
•Iran observes daylight saving time, switching to IRDT (UTC+04:30).
•Tehran has a metropolitan population of over 16 million.

Daylight Saving:Yes – switches to IRDT

Learn more about IRST 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 Tehran

Wikipedia

Tehran operates on Iran Standard Time (IRST), UTC+3:30. Iran's unique half-hour offset makes Tehran time distinctive for regional business coordination.

Population:9.4 million

Metro:16.8 million

Business Hours:8:00 AM - 4:00 PM IRST

Currency:IRR (﷼)

Stock Exchange:TSE (Tehran Stock Exchange)

Key Landmarks

Azadi TowerGolestan PalaceGrand BazaarMilad TowerTabiat Bridge

Did You Know?

Iran Standard Time (IRST) is one of few timezones with a 30-minute offset (UTC+3:30).

Learn more about IRST timezone →

Jakarta vs Tehran: Offsets, DST and Best Call Times

Jakarta runs on Western Indonesia Time (WIB) at UTC+07:00. Tehran runs on Iran Standard Time (IRST) at UTC+03:30. That puts Jakarta 3 hours 30 minutes behind Tehran — a difference of -3h 30m at the current offsets.

In practice, when it is 9:00 AM in Jakarta it is 5:30 AM in Tehran. Midnight in Jakarta is 8:30 PM in Tehran. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Jakarta to Tehran time conversion table

Jakarta (WIB)	Tehran (IRST)	Day
12:00 AM	8:30 PM	previous day
6:00 AM	2:30 AM	same day
7:00 AM	3:30 AM	same day
8:00 AM	4:30 AM	same day
9:00 AM	5:30 AM	same day
12:00 PM	8:30 AM	same day
3:00 PM	11:30 AM	same day
5:00 PM	1:30 PM	same day
6:00 PM	2:30 PM	same day
9:00 PM	5:30 PM	same day

Why people convert Jakarta to Tehran time

Scheduling a call from Jakarta to Tehran: a 10:00 AM start in Jakarta lands at 6:30 AM in Tehran, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Jakarta and Tehran are inside the 9-to-5 working day between 12:30 PM and 5:00 PM WIB time (9:00 AM–1:30 PM IRST). That is roughly 4 hours 30 minutes of usable overlap.
Booking travel or deliveries: tracking Tehran local time against Jakarta keeps pickup windows and arrival estimates honest across the -3h 30m offset.

Always state the zone abbreviation, not just the hour. "3:00 PM WIB" is unambiguous; "3 PM" across a -3h 30m gap is not.
Block 12:30 PM–5:00 PM WIB as the recurring meeting window if you work primarily from Jakarta and need Tehran 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 IRST (Iran Standard Time)

Iran Standard Time (IRST) is one of the few time zones with a 30-minute offset. Iran observes daylight saving time (IRDT, UTC+04:30) from late March to late September. Tehran, the capital, is one of the largest cities in the Middle East.

Best time to call between Jakarta and Tehran

Both Jakarta and Tehran sit inside the 9 AM – 5 PM working day between 12:30 PM–5:00 PM WIB, which is 9:00 AM–1:30 PM IRST. That gives roughly 4 hours and 30 minutes of shared time — the safest window for a live call or meeting.

Business hours overlap

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

Jakarta is 3 hours 30 minutes behind Tehran (WIB UTC+07:00 → IRST UTC+03:30). The shared working window is 12:30 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 Tehran?

Jakarta (WIB, UTC+07:00) is 3 hours 30 minutes behind Tehran (IRST, UTC+03:30). The gap is currently -3h 30m.

How do I convert Jakarta time to Tehran time?

Add -3h 30m to Jakarta local time. For example, 9:00 AM in Jakarta is 5:30 AM in Tehran.

What time is it in Tehran right now?

Tehran uses IRST at UTC+03:30. Use the live converter at the top of this page — it updates in real time and already accounts for the -3h 30m offset from Jakarta.

What is the best time to call Tehran from Jakarta?

Call between 12:30 PM and 5:00 PM WIB — that maps to 9:00 AM–1:30 PM IRST and keeps both parties inside the working day.

Which is behind, Jakarta or Tehran?

Jakarta is 3 hours 30 minutes behind Tehran. When it is 12:00 PM in Jakarta it is 8:30 AM in Tehran.

Do Jakarta and Tehran use different time zones?

Jakarta (Indonesia) uses WIB at UTC+07:00, while Tehran (Iran) uses IRST at UTC+03:30. The IANA identifiers are Asia/Jakarta and Asia/Tehran.

Does daylight saving time affect the Jakarta–Tehran difference?

Neither zone observes daylight saving time, so the -3h 30m offset between Jakarta and Tehran 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 Tehran?

Not normally. The -3h 30m gap only pushes the date over the previous day.

What is the time difference between Jakarta and Tehran?

Tehran is -3h 30m 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 Tehran in?

Tehran operates on Iran Standard Time (IRST), UTC+3:30. Iran's unique half-hour offset makes Tehran time distinctive for regional business coordination.

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 Tehran?

Standard business hours in Tehran are 8:00 AM - 4:00 PM IRST.

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

The best overlap for a call is when both cities are in business hours. Jakarta works 8:00 AM - 5:00 PM WIB and Tehran works 8:00 AM - 4:00 PM IRST (-3h 30m difference). Try scheduling during the overlapping window for maximum convenience.

What currencies are used in Jakarta and Tehran?

Jakarta uses IDR (Rp) while Tehran uses IRR (﷼). Check current exchange rates when planning travel or business between these cities.

How do Jakarta and Tehran compare in size?

Jakarta has a population of approximately 10.5 million (metro: 34.5 million), while Tehran has approximately 9.4 million (metro: 16.8 million).

What are the major landmarks in Jakarta and Tehran?

Jakarta is known for Monas, Istiqlal Mosque, Old Town (Kota Tua). Tehran is famous for Azadi Tower, Golestan Palace, Grand Bazaar.

Do Jakarta and Tehran have stock exchanges?

Yes. Jakarta has the IDX (Indonesia Stock Exchange) and Tehran has the TSE (Tehran Stock Exchange). The -3h 30m time difference affects trading hour overlaps between these exchanges.