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.

ICT to Sydney

+3h

ICT

ICTSOURCE

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

ICT

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 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 →

ICT vs Sydney: Offsets, DST and Best Call Times

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

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

ICT to Sydney time conversion table

ICT (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 ICT to Sydney time

Scheduling a call from ICT to Sydney: a 10:00 AM start in ICT lands at 1:00 PM in Sydney, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both ICT 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.
Watching a live event or market open: ICT viewers need 12:00 PM in Sydney to catch a 9:00 AM start there, and 9:00 PM if the event is anchored to ICT.

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 ICT 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 ICT and Sydney

Both ICT 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

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

ICT 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

ICT

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 ICT and Sydney?

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

How do I convert ICT time to Sydney time?

Add +3h to ICT local time. For example, 9:00 AM in ICT 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 ICT.

What is the best time to call Sydney from ICT?

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, ICT or Sydney?

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

Do ICT and Sydney use different time zones?

ICT 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 ICT–Sydney difference?

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

Which other cities share ICT's time zone?

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

Which countries use ICT, ICT's zone?

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

Is there a day difference between ICT and Sydney?

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

What is the time difference between ICT and Sydney?

Sydney is +3h from ICT.

What timezone is ICT in?

ICT operates on its local timezone.

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.