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 CAT

-5h

Ho Chi Minh

ICTSOURCE

Vietnam · UTC+07:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

CAT

UTC+02:00

HH07

MM00

07:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Ho Chi Minh

CAT

12:00 AM

7:00 PM-1

2:00 AM

9:00 PM-1

4:00 AM

11:00 PM-1

6:00 AM

1:00 AM

8:00 AM

3:00 AM

10:00 AM

5:00 AM

12:00 PM

7:00 AM

2:00 PM

9:00 AM

4:00 PM

11:00 AM

6:00 PM

1:00 PM

8:00 PM

3:00 PM

10:00 PM

5:00 PM

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

ICT and CAT on the World Map

The map below highlights the ICT (Indochina Time) and CAT (Central Africa Time) timezone regions across the globe.

ICT Zone

→

CAT 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

CAT – Central Africa Time

UTC+02:00

Central Africa Time (CAT, UTC+02:00) covers Zimbabwe, Zambia, Mozambique, Malawi and neighbouring countries.

Countries in CAT

ZimbabweZambiaMozambiqueMalawiRwandaBurundiDR Congo (east)

Major Cities in CAT

HarareLusakaMaputoLilongweKigali

Key Facts about CAT

•Central Africa Time is fixed at UTC+02:00 with no daylight saving.
•CAT matches South Africa Standard Time (SAST) all year.
•It is the same offset as Central European Time in winter.
•Harare is level with Johannesburg and one hour ahead of Lagos.

Daylight Saving:No – UTC+02:00 year-round

Learn more about CAT 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 →

Ho Chi Minh to CAT Time Difference – Complete Guide

Ho Chi Minh runs on Indochina Time (ICT) at UTC+07:00. CAT runs on Central Africa Time (CAT) at UTC+02:00. That puts Ho Chi Minh 5 hours behind CAT — a difference of -5h at the current offsets.

In practice, when it is 9:00 AM in Ho Chi Minh it is 4:00 AM in CAT. Midnight in Ho Chi Minh is 7:00 PM in CAT. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Ho Chi Minh to CAT time conversion table

Ho Chi Minh (ICT)	CAT (CAT)	Day
12:00 AM	7:00 PM	previous day
6:00 AM	1:00 AM	same day
7:00 AM	2:00 AM	same day
8:00 AM	3:00 AM	same day
9:00 AM	4:00 AM	same day
12:00 PM	7:00 AM	same day
3:00 PM	10:00 AM	same day
5:00 PM	12:00 PM	same day
6:00 PM	1:00 PM	same day
9:00 PM	4:00 PM	same day

Why people convert Ho Chi Minh to CAT time

Scheduling a call from Ho Chi Minh to CAT: a 10:00 AM start in Ho Chi Minh lands at 5:00 AM in CAT, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Ho Chi Minh and CAT are inside the 9-to-5 working day between 2:00 PM and 5:00 PM ICT time (9:00 AM–12:00 PM CAT). That is roughly 3 hours of usable overlap.
Watching a live event or market open: Ho Chi Minh viewers need 4:00 AM in CAT to catch a 9:00 AM start there, and 5:00 AM if the event is anchored to Ho Chi Minh.

Always state the zone abbreviation, not just the hour. "3:00 PM ICT" is unambiguous; "3 PM" across a -5h gap is not.
Block 2:00 PM–5:00 PM ICT as the recurring meeting window if you work primarily from Ho Chi Minh and need CAT 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 CAT (Central Africa Time)

Central Africa Time (CAT) is fixed at UTC+02:00 all year across a broad belt of southern and central Africa, including Zimbabwe, Zambia, Mozambique, Malawi, Rwanda, Burundi and the eastern Democratic Republic of the Congo. None of these countries observes daylight saving time, so CAT never shifts. It is the same offset as South Africa Standard Time (SAST) and the winter version of Central European Time, which makes CAT a convenient bridge between African, European and Middle Eastern schedules — Harare is level with Johannesburg all year and one hour ahead of Lagos.

Best time to call between Ho Chi Minh and CAT

Both Ho Chi Minh and CAT sit inside the 9 AM – 5 PM working day between 2:00 PM–5:00 PM ICT, which is 9:00 AM–12:00 PM CAT. That gives roughly 3 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

Ho Chi Minh and CAT overlap for about 3 hours during the working day — enough for meetings if you avoid the edges of the window.

Ho Chi Minh is 5 hours behind CAT (ICT UTC+07:00 → CAT UTC+02:00). The shared working window is 2:00 PM–5:00 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 CAT?

Ho Chi Minh (ICT, UTC+07:00) is 5 hours behind CAT (CAT, UTC+02:00). The gap is currently -5h.

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

Add -5h to Ho Chi Minh local time. For example, 9:00 AM in Ho Chi Minh is 4:00 AM in CAT.

What time is it in CAT right now?

CAT uses CAT at UTC+02:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -5h offset from Ho Chi Minh.

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

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

Which is behind, Ho Chi Minh or CAT?

Ho Chi Minh is 5 hours behind CAT. When it is 12:00 PM in Ho Chi Minh it is 7:00 AM in CAT.

Do Ho Chi Minh and CAT use different time zones?

Ho Chi Minh (Vietnam) uses ICT at UTC+07:00, while CAT uses CAT at UTC+02:00. The IANA identifiers are Asia/Ho_Chi_Minh and Africa/Harare.

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

Neither zone observes daylight saving time, so the -5h offset between Ho Chi Minh and CAT 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 CAT?

Not normally. The -5h gap only pushes the date over the previous day.

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

CAT is -5h 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.