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.

Bangkok to Sydney

+3h

Bangkok

ICTSOURCE

Thailand · UTC+07:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Sydney

AEST

Australia · UTC+10:00DST observed

HH03

MM00

15:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Bangkok

Sydney

12:00 AM

3:00 AM

2:00 AM

5:00 AM

4:00 AM

7:00 AM

6:00 AM

9:00 AM

8:00 AM

11:00 AM

10:00 AM

1:00 PM

12:00 PM

3:00 PM

2:00 PM

5:00 PM

4:00 PM

7:00 PM

6:00 PM

9:00 PM

8:00 PM

11:00 PM

10:00 PM

1:00 AM+1

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

ICT and AEST on the World Map

The map below highlights the ICT (Indochina Time) and AEST (Australian Eastern Standard Time) timezone regions across the globe.

ICT Zone

→

AEST Zone

Explore all world timezones interactively →

ICT – Indochina Time

UTC+07:00

Indochina Time (ICT) is the time zone for Vietnam, Thailand, Laos, and Cambodia, 7 hours ahead of UTC.

Countries in ICT

ThailandVietnamCambodiaLaosIndonesia (WIB)

Major Cities in ICT

BangkokHo Chi Minh CityHanoiJakartaPhnom PenhVientiane

Key Facts about ICT

•Bangkok is one of the most visited cities in the world.
•ICT is 12 hours ahead of EST.
•Thailand, Vietnam, and Cambodia all share ICT.

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

Learn more about ICT on Wikipedia

AEST – Australian Eastern Standard Time

UTC+10:00

Australian Eastern Standard Time (AEST) covers eastern Australia, 10 hours ahead of UTC.

Countries in AEST

Australia (NSW, VIC, QLD, TAS, ACT)Papua New Guinea

Major Cities in AEST

SydneyMelbourneBrisbaneCanberraHobartGold Coast

Key Facts about AEST

•Queensland does not observe daylight saving time, staying on AEST year-round.
•Sydney and Melbourne switch to AEDT (UTC+11:00) in summer.
•The Australian Securities Exchange (ASX) operates on AEST/AEDT.
•AEST is 15 hours ahead of EST during winter.

Daylight Saving:Yes – switches to AEDT

Learn more about AEST on Wikipedia

About Bangkok

Wikipedia

Bangkok operates on Indochina Time (ICT), UTC+7. As Southeast Asia's largest economy hub, Bangkok bridges East Asian and South Asian business hours.

Population:8.3 million

Metro:14.6 million

Business Hours:8:30 AM - 5:30 PM ICT

Currency:THB (฿)

Stock Exchange:SET (Stock Exchange of Thailand)

Key Landmarks

Grand PalaceWat ArunWat PhoChatuchak MarketKhao San Road

Did You Know?

Bangkok is one of the world's most visited cities, with over 22 million visitors annually.

Learn more about ICT timezone →

About Sydney

Wikipedia

Sydney operates on Australian Eastern Standard Time (AEST/AEDT). As Australia's financial capital, Sydney opens global markets at the start of the business day.

Population:5.4 million

Metro:5.4 million

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

Currency:AUD (A$)

Stock Exchange:ASX (Australian Securities Exchange)

Key Landmarks

Sydney Opera HouseSydney Harbour BridgeBondi BeachDarling HarbourRoyal Botanic Garden

Did You Know?

Sydney is one of the first major cities to welcome the New Year.

Learn more about AEST timezone →

Everything You Need to Know About Bangkok and Sydney Time

Bangkok runs on Indochina Time (ICT) at UTC+07:00. Sydney runs on Australian Eastern Standard Time (AEST) at UTC+10:00. That puts Bangkok 3 hours ahead of Sydney — a difference of +3h at the current offsets.

In practice, when it is 9:00 AM in Bangkok it is 12:00 PM in Sydney. Midnight in Bangkok is 3:00 AM in Sydney. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Bangkok to Sydney time conversion table

Bangkok (ICT)	Sydney (AEST)	Day
12:00 AM	3:00 AM	same day
6:00 AM	9:00 AM	same day
7:00 AM	10:00 AM	same day
8:00 AM	11:00 AM	same day
9:00 AM	12:00 PM	same day
12:00 PM	3:00 PM	same day
3:00 PM	6:00 PM	same day
5:00 PM	8:00 PM	same day
6:00 PM	9:00 PM	same day
9:00 PM	12:00 AM	next day

Why people convert Bangkok to Sydney time

Scheduling a call from Bangkok to Sydney: a 10:00 AM start in Bangkok lands at 1:00 PM in Sydney, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Bangkok and Sydney are inside the 9-to-5 working day between 9:00 AM and 2:00 PM ICT time (12:00 PM–5:00 PM AEST). That is roughly 5 hours of usable overlap.
Booking travel or deliveries: tracking Sydney local time against Bangkok keeps pickup windows and arrival estimates honest across the +3h offset.

Always state the zone abbreviation, not just the hour. "3:00 PM ICT" is unambiguous; "3 PM" across a +3h gap is not.
Block 9:00 AM–2:00 PM ICT as the recurring meeting window if you work primarily from Bangkok and need Sydney colleagues present.
Sydney: Clocks spring forward on Sat, Oct 3, 2026. Any meeting series spanning that date will shift by an hour in local time.

About ICT (Indochina Time)

Indochina Time (ICT) is used across Southeast Asia including Vietnam, Thailand, Laos, and Cambodia. Indonesia (Western time, WIB) also uses UTC+07:00. ICT does not observe daylight saving time.

About AEST (Australian Eastern Standard Time)

Australian Eastern Standard Time (AEST) is used in the eastern states of Australia including New South Wales, Victoria, Queensland, Tasmania, and the ACT. During summer (October to April), NSW, VIC, TAS, and ACT switch to Australian Eastern Daylight Time (AEDT, UTC+11:00), while Queensland remains on AEST year-round.

Best time to call between Bangkok and Sydney

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

Business hours overlap

Bangkok and Sydney share 5 hours of working-hours overlap (9:00 AM–2:00 PM ICT), so scheduling a live meeting is straightforward.

Bangkok is 3 hours ahead of Sydney (ICT UTC+07:00 → AEST UTC+10:00). The shared working window is 9:00 AM–2:00 PM ICT. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

Bangkok

Does not observe DST

Sydney

❄ Currently in Standard Time

Standard: UTC+10:00 · DST: UTC+11:00

Clocks spring forward on Sat, Oct 3, 2026

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 Bangkok and Sydney?

Bangkok (ICT, UTC+07:00) is 3 hours ahead of Sydney (AEST, UTC+10:00). The gap is currently +3h.

How do I convert Bangkok time to Sydney time?

Add +3h to Bangkok local time. For example, 9:00 AM in Bangkok is 12:00 PM in Sydney.

What time is it in Sydney right now?

Sydney uses AEST at UTC+10:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +3h offset from Bangkok.

What is the best time to call Sydney from Bangkok?

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

Which is ahead, Bangkok or Sydney?

Bangkok is 3 hours ahead of Sydney. When it is 12:00 PM in Bangkok it is 3:00 PM in Sydney.

Do Bangkok and Sydney use different time zones?

Bangkok (Thailand) uses ICT at UTC+07:00, while Sydney (Australia) uses AEST at UTC+10:00. The IANA identifiers are Asia/Bangkok and Australia/Sydney.

Does daylight saving time affect the Bangkok–Sydney difference?

Neither zone observes daylight saving time, so the +3h offset between Bangkok and Sydney is fixed all year.

Which other cities share Bangkok's time zone?

ICT also covers Bangkok, Ho Chi Minh City, Hanoi, Jakarta, Phnom Penh, Vientiane.

Which countries use ICT, Bangkok's zone?

ICT is used in Thailand, Vietnam, Cambodia, Laos, Indonesia (WIB).

Is there a day difference between Bangkok and Sydney?

Not normally. The +3h gap only pushes the date over for late-evening times.

What is the time difference between Bangkok and Sydney?

Sydney is +3h from Bangkok.

What timezone is Bangkok in?

Bangkok operates on Indochina Time (ICT), UTC+7. As Southeast Asia's largest economy hub, Bangkok bridges East Asian and South Asian business hours.

What timezone is Sydney in?

Sydney operates on Australian Eastern Standard Time (AEST/AEDT). As Australia's financial capital, Sydney opens global markets at the start of the business day.

What are the business hours in Bangkok?

Standard business hours in Bangkok are 8:30 AM - 5:30 PM ICT.

What are the business hours in Sydney?

Standard business hours in Sydney are 9:00 AM - 5:00 PM AEST.

What is the best time to schedule a call between Bangkok and Sydney?

The best overlap for a call is when both cities are in business hours. Bangkok works 8:30 AM - 5:30 PM ICT and Sydney works 9:00 AM - 5:00 PM AEST (+3h difference). Try scheduling during the overlapping window for maximum convenience.

What currencies are used in Bangkok and Sydney?

Bangkok uses THB (฿) while Sydney uses AUD (A$). Check current exchange rates when planning travel or business between these cities.

How do Bangkok and Sydney compare in size?

Bangkok has a population of approximately 8.3 million (metro: 14.6 million), while Sydney has approximately 5.4 million (metro: 5.4 million).

What are the major landmarks in Bangkok and Sydney?

Bangkok is known for Grand Palace, Wat Arun, Wat Pho. Sydney is famous for Sydney Opera House, Sydney Harbour Bridge, Bondi Beach.

Do Bangkok and Sydney have stock exchanges?

Yes. Bangkok has the SET (Stock Exchange of Thailand) and Sydney has the ASX (Australian Securities Exchange). The +3h time difference affects trading hour overlaps between these exchanges.