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).

Ho Chi Minh to AWST

+1h

Ho Chi Minh

ICTSOURCE

Vietnam · UTC+07:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

AWST

UTC+08:00

HH01

MM00

13:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Ho Chi Minh

AWST

12:00 AM

1:00 AM

2:00 AM

3:00 AM

4:00 AM

5:00 AM

6:00 AM

7:00 AM

8:00 AM

9:00 AM

10:00 AM

11:00 AM

12:00 PM

1:00 PM

2:00 PM

3:00 PM

4:00 PM

5:00 PM

6:00 PM

7:00 PM

8:00 PM

9:00 PM

10:00 PM

11:00 PM

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

ICT and AWST on the World Map

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

ICT Zone

→

AWST 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

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

About Ho Chi Minh

Wikipedia

Ho Chi Minh City operates on Indochina Time (ICT), UTC+7. As Vietnam's economic powerhouse and a manufacturing hub, Saigon drives Southeast Asian trade.

Population:9 million

Metro:13 million

Business Hours:8:00 AM - 5:00 PM ICT

Currency:VND (₫)

Stock Exchange:HOSE (Ho Chi Minh Stock Exchange)

Key Landmarks

Notre-Dame CathedralWar Remnants MuseumBen Thanh MarketIndependence PalaceCu Chi Tunnels

Did You Know?

The city has over 5 million motorbikes, outnumbering cars significantly.

Learn more about ICT timezone →

Understanding the +1h Gap: Ho Chi Minh vs AWST

Ho Chi Minh runs on Indochina Time (ICT) at UTC+07:00. AWST runs on Australian Western Standard Time (AWST) at UTC+08:00. That puts Ho Chi Minh 1 hour ahead of AWST — a difference of +1h at the current offsets.

In practice, when it is 9:00 AM in Ho Chi Minh it is 10:00 AM in AWST. Midnight in Ho Chi Minh is 1:00 AM in AWST. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Ho Chi Minh to AWST time conversion table

Ho Chi Minh (ICT)	AWST (AWST)	Day
12:00 AM	1:00 AM	same day
6:00 AM	7:00 AM	same day
7:00 AM	8:00 AM	same day
8:00 AM	9:00 AM	same day
9:00 AM	10:00 AM	same day
12:00 PM	1:00 PM	same day
3:00 PM	4:00 PM	same day
5:00 PM	6:00 PM	same day
6:00 PM	7:00 PM	same day
9:00 PM	10:00 PM	same day

Why people convert Ho Chi Minh to AWST time

Scheduling a call from Ho Chi Minh to AWST: a 10:00 AM start in Ho Chi Minh lands at 11:00 AM in AWST, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Ho Chi Minh and AWST are inside the 9-to-5 working day between 9:00 AM and 4:00 PM ICT time (10:00 AM–5:00 PM AWST). That is roughly 7 hours of usable overlap.
Keeping family and friends in sync: knowing that 8:00 PM in Ho Chi Minh is 9:00 PM in AWST makes it easy to avoid calling at 3 AM.

Always state the zone abbreviation, not just the hour. "3:00 PM ICT" is unambiguous; "3 PM" across a +1h gap is not.
Block 9:00 AM–4:00 PM ICT as the recurring meeting window if you work primarily from Ho Chi Minh and need AWST colleagues present.

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 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.

Best time to call between Ho Chi Minh and AWST

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

Business hours overlap

Ho Chi Minh and AWST share 7 hours of working-hours overlap (9:00 AM–4:00 PM ICT), so scheduling a live meeting is straightforward.

Ho Chi Minh is 1 hour ahead of AWST (ICT UTC+07:00 → AWST UTC+08:00). The shared working window is 9:00 AM–4:00 PM ICT. 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 Ho Chi Minh and AWST?

Ho Chi Minh (ICT, UTC+07:00) is 1 hour ahead of AWST (AWST, UTC+08:00). The gap is currently +1h.

How do I convert Ho Chi Minh time to AWST time?

Add +1h to Ho Chi Minh local time. For example, 9:00 AM in Ho Chi Minh is 10:00 AM in AWST.

What time is it in AWST right now?

AWST uses AWST at UTC+08:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +1h offset from Ho Chi Minh.

What is the best time to call AWST from Ho Chi Minh?

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

Which is ahead, Ho Chi Minh or AWST?

Ho Chi Minh is 1 hour ahead of AWST. When it is 12:00 PM in Ho Chi Minh it is 1:00 PM in AWST.

Do Ho Chi Minh and AWST use different time zones?

Ho Chi Minh (Vietnam) uses ICT at UTC+07:00, while AWST uses AWST at UTC+08:00. The IANA identifiers are Asia/Ho_Chi_Minh and Australia/Perth.

Does daylight saving time affect the Ho Chi Minh–AWST difference?

Neither zone observes daylight saving time, so the +1h offset between Ho Chi Minh and AWST is fixed all year.

Which other cities share Ho Chi Minh's time zone?

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

Which countries use ICT, Ho Chi Minh's zone?

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

Is there a day difference between Ho Chi Minh and AWST?

Not normally. The +1h gap only pushes the date over for late-evening times.

What is the time difference between Ho Chi Minh and AWST?

AWST is +1h from Ho Chi Minh.

What timezone is Ho Chi Minh in?

Ho Chi Minh City operates on Indochina Time (ICT), UTC+7. As Vietnam's economic powerhouse and a manufacturing hub, Saigon drives Southeast Asian trade.