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).

Perth to Jakarta

-1h

Perth

AWSTSOURCE

Australia · UTC+08:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Jakarta

WIB

Indonesia · UTC+07:00

HH11

MM00

11:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Perth

Jakarta

12:00 AM

11:00 PM-1

2:00 AM

1:00 AM

4:00 AM

3:00 AM

6:00 AM

5:00 AM

8:00 AM

7:00 AM

10:00 AM

9:00 AM

12:00 PM

11:00 AM

2:00 PM

1:00 PM

4:00 PM

3:00 PM

6:00 PM

5:00 PM

8:00 PM

7:00 PM

10:00 PM

9:00 PM

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

AWST and WIB on the World Map

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

AWST Zone

→

WIB Zone

Explore all world timezones interactively →

AWST – Australian Western Standard Time

UTC+08:00

Australian Western Standard Time (AWST) is the time zone for Western Australia, 8 hours ahead of UTC.

Countries in AWST

Australia (Western Australia)

Major Cities in AWST

PerthMandurahBunburyGeraldton

Key Facts about AWST

•Western Australia does not observe daylight saving time.
•Perth is the most isolated major city in the world.
•AWST is the same offset as China Standard Time and Singapore Time.

Daylight Saving:No – UTC+08:00 year-round

Learn more about AWST on Wikipedia

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

About Perth

Wikipedia

Perth operates on Australian Western Time (AWST), UTC+8 with no daylight saving. As Australia's mining capital, Perth coordinates with Asian markets.

Population:2.1 million

Metro:2.2 million

Business Hours:9:00 AM - 5:00 PM AWST

Currency:AUD (A$)

Stock Exchange:ASX (via Sydney)

Key Landmarks

Kings ParkPerth MintElizabeth QuayCottesloe BeachFremantle Prison

Did You Know?

Western Australia does not observe daylight saving time.

Learn more about AWST timezone →

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 →

Everything You Need to Know About Perth and Jakarta Time

Perth runs on Australian Western Standard Time (AWST) at UTC+08:00. Jakarta runs on Western Indonesia Time (WIB) at UTC+07:00. That puts Perth 1 hour behind Jakarta — a difference of -1h at the current offsets.

In practice, when it is 9:00 AM in Perth it is 8:00 AM in Jakarta. Midnight in Perth is 11:00 PM in Jakarta. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Perth to Jakarta time conversion table

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

Why people convert Perth to Jakarta time

Scheduling a call from Perth to Jakarta: a 10:00 AM start in Perth lands at 9:00 AM in Jakarta, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Perth and Jakarta are inside the 9-to-5 working day between 10:00 AM and 5:00 PM AWST time (9:00 AM–4:00 PM WIB). That is roughly 7 hours of usable overlap.
Keeping family and friends in sync: knowing that 8:00 PM in Perth is 7:00 PM in Jakarta makes it easy to avoid calling at 3 AM.

Always state the zone abbreviation, not just the hour. "3:00 PM AWST" is unambiguous; "3 PM" across a -1h gap is not.
Block 10:00 AM–5:00 PM AWST as the recurring meeting window if you work primarily from Perth and need Jakarta colleagues present.

About AWST (Australian Western Standard Time)

Australian Western Standard Time (AWST) is used in Western Australia. WA does not observe daylight saving time, having rejected it in multiple referendums. Perth is the most remote major city in the world.

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.

Best time to call between Perth and Jakarta

Both Perth and Jakarta sit inside the 9 AM – 5 PM working day between 10:00 AM–5:00 PM AWST, which is 9:00 AM–4:00 PM WIB. That gives roughly 7 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

Perth and Jakarta share 7 hours of working-hours overlap (10:00 AM–5:00 PM AWST), so scheduling a live meeting is straightforward.

Perth is 1 hour behind Jakarta (AWST UTC+08:00 → WIB UTC+07:00). The shared working window is 10:00 AM–5:00 PM AWST. 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 Perth and Jakarta?

Perth (AWST, UTC+08:00) is 1 hour behind Jakarta (WIB, UTC+07:00). The gap is currently -1h.

How do I convert Perth time to Jakarta time?

Add -1h to Perth local time. For example, 9:00 AM in Perth is 8:00 AM in Jakarta.

What time is it in Jakarta right now?

Jakarta uses WIB at UTC+07:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -1h offset from Perth.

What is the best time to call Jakarta from Perth?

Call between 10:00 AM and 5:00 PM AWST — that maps to 9:00 AM–4:00 PM WIB and keeps both parties inside the working day.

Which is behind, Perth or Jakarta?

Perth is 1 hour behind Jakarta. When it is 12:00 PM in Perth it is 11:00 AM in Jakarta.

Do Perth and Jakarta use different time zones?

Perth (Australia) uses AWST at UTC+08:00, while Jakarta (Indonesia) uses WIB at UTC+07:00. The IANA identifiers are Australia/Perth and Asia/Jakarta.

Does daylight saving time affect the Perth–Jakarta difference?

Neither zone observes daylight saving time, so the -1h offset between Perth and Jakarta is fixed all year.

Which other cities share Perth's time zone?

AWST also covers Perth, Mandurah, Bunbury, Geraldton.

Which countries use AWST, Perth's zone?

AWST is used in Australia (Western Australia).

Is there a day difference between Perth and Jakarta?

Not normally. The -1h gap only pushes the date over the previous day.

What is the time difference between Perth and Jakarta?

Jakarta is -1h from Perth.

What timezone is Perth in?

Perth operates on Australian Western Time (AWST), UTC+8 with no daylight saving. As Australia's mining capital, Perth coordinates with Asian markets.

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 are the business hours in Perth?

Standard business hours in Perth are 9:00 AM - 5:00 PM AWST.

What are the business hours in Jakarta?

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

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

The best overlap for a call is when both cities are in business hours. Perth works 9:00 AM - 5:00 PM AWST and Jakarta works 8:00 AM - 5:00 PM WIB (-1h difference). Try scheduling during the overlapping window for maximum convenience.

What currencies are used in Perth and Jakarta?

Perth uses AUD (A$) while Jakarta uses IDR (Rp). Check current exchange rates when planning travel or business between these cities.

How do Perth and Jakarta compare in size?

Perth has a population of approximately 2.1 million (metro: 2.2 million), while Jakarta has approximately 10.5 million (metro: 34.5 million).

What are the major landmarks in Perth and Jakarta?

Perth is known for Kings Park, Perth Mint, Elizabeth Quay. Jakarta is famous for Monas, Istiqlal Mosque, Old Town (Kota Tua).

Do Perth and Jakarta have stock exchanges?

Yes. Perth has the ASX (via Sydney) and Jakarta has the IDX (Indonesia Stock Exchange). The -1h time difference affects trading hour overlaps between these exchanges.