Vietnam to JST
+2hVietnam
ICTSOURCEJST
JSTGreen rows indicate typical business hours (9 AM - 5 PM)
ICT and JST on the World Map
The map below highlights the ICT (Indochina Time) and JST (Japan Standard Time) timezone regions across the globe.
ICT – Indochina Time
UTC+07:00Indochina Time (ICT) is the time zone for Vietnam, Thailand, Laos, and Cambodia, 7 hours ahead of UTC.
- •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.
JST – Japan Standard Time
UTC+09:00Japan Standard Time (JST) is the time zone for Japan, 9 hours ahead of UTC.
- •Japan does not observe daylight saving time.
- •Tokyo is the most populous metropolitan area in the world.
- •The Tokyo Stock Exchange operates from 9:00 AM to 3:00 PM JST.
- •JST is 14 hours ahead of EST and 9 hours ahead of GMT.
Vietnam to JST Time Difference – Complete Guide
Vietnam runs on Indochina Time (ICT) at UTC+07:00. JST runs on Japan Standard Time (JST) at UTC+09:00. That puts Vietnam 2 hours ahead of JST — a difference of +2h at the current offsets.
In practice, when it is 9:00 AM in Vietnam it is 11:00 AM in JST. Midnight in Vietnam is 2:00 AM in JST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Vietnam to JST time conversion table
| Vietnam (ICT) | JST (JST) | Day |
|---|---|---|
| 12:00 AM | 2:00 AM | same day |
| 6:00 AM | 8:00 AM | same day |
| 7:00 AM | 9:00 AM | same day |
| 8:00 AM | 10:00 AM | same day |
| 9:00 AM | 11:00 AM | same day |
| 12:00 PM | 2:00 PM | same day |
| 3:00 PM | 5:00 PM | same day |
| 5:00 PM | 7:00 PM | same day |
| 6:00 PM | 8:00 PM | same day |
| 9:00 PM | 11:00 PM | same day |
Why people convert Vietnam to JST time
- Scheduling a call from Vietnam to JST: a 10:00 AM start in Vietnam lands at 12:00 PM in JST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Vietnam and JST are inside the 9-to-5 working day between 9:00 AM and 3:00 PM ICT time (11:00 AM–5:00 PM JST). That is roughly 6 hours of usable overlap.
- Booking travel or deliveries: tracking JST local time against Vietnam keeps pickup windows and arrival estimates honest across the +2h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM ICT" is unambiguous; "3 PM" across a +2h gap is not.
- Block 9:00 AM–3:00 PM ICT as the recurring meeting window if you work primarily from Vietnam and need JST 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 JST (Japan Standard Time)
Japan Standard Time (JST) is the standard time zone for all of Japan. Japan does not observe daylight saving time. JST is 9 hours ahead of UTC and 14 hours ahead of EST. The Tokyo Stock Exchange, the world's third largest by market capitalization, operates on JST. South Korea uses the same offset (KST) but it is a distinct time zone.
Best time to call between Vietnam and JST
Both Vietnam and JST sit inside the 9 AM – 5 PM working day between 9:00 AM–3:00 PM ICT, which is 11:00 AM–5:00 PM JST. That gives roughly 6 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Vietnam and JST share 6 hours of working-hours overlap (9:00 AM–3:00 PM ICT), so scheduling a live meeting is straightforward.
Vietnam is 2 hours ahead of JST (ICT UTC+07:00 → JST UTC+09:00). The shared working window is 9:00 AM–3:00 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:
Frequently Asked Questions
What is the time difference between Vietnam and JST?
Vietnam (ICT, UTC+07:00) is 2 hours ahead of JST (JST, UTC+09:00). The gap is currently +2h.
How do I convert Vietnam time to JST time?
Add +2h to Vietnam local time. For example, 9:00 AM in Vietnam is 11:00 AM in JST.
What time is it in JST right now?
JST uses JST at UTC+09:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +2h offset from Vietnam.
What is the best time to call JST from Vietnam?
Call between 9:00 AM and 3:00 PM ICT — that maps to 11:00 AM–5:00 PM JST and keeps both parties inside the working day.
Which is ahead, Vietnam or JST?
Vietnam is 2 hours ahead of JST. When it is 12:00 PM in Vietnam it is 2:00 PM in JST.
Do Vietnam and JST use different time zones?
Vietnam (Vietnam) uses ICT at UTC+07:00, while JST uses JST at UTC+09:00. The IANA identifiers are Asia/Ho_Chi_Minh and Asia/Tokyo.
Does daylight saving time affect the Vietnam–JST difference?
Neither zone observes daylight saving time, so the +2h offset between Vietnam and JST is fixed all year.
Which other cities share Vietnam's time zone?
ICT also covers Bangkok, Ho Chi Minh City, Hanoi, Jakarta, Phnom Penh, Vientiane.
Which countries use ICT, Vietnam's zone?
ICT is used in Thailand, Vietnam, Cambodia, Laos, Indonesia (WIB).
Is there a day difference between Vietnam and JST?
Not normally. The +2h gap only pushes the date over for late-evening times.
What is the time difference between Vietnam and JST?
JST is +2h from Vietnam.
What timezone is Vietnam in?
Vietnam operates on its local timezone.
What timezone is JST in?
JST operates on its local timezone.
Which countries use ICT (Indochina Time)?
ICT is used in Thailand, Vietnam, Cambodia, Laos, Indonesia (WIB).
Does ICT observe daylight saving time?
No, ICT does not observe daylight saving time and remains at UTC+07:00 year-round.
What are some interesting facts about ICT?
Bangkok is one of the most visited cities in the world. ICT is 12 hours ahead of EST.
Which cities are in the JST timezone?
Major cities in the JST timezone include Tokyo, Osaka, Yokohama, Nagoya, Sapporo, Kyoto, Kobe, Fukuoka.
What is the UTC offset for JST?
Japan Standard Time (JST) is at UTC+09:00.
What should I know about the JST timezone?
Japan does not observe daylight saving time. Tokyo is the most populous metropolitan area in the world.
When is it midnight in Vietnam, what time is it in JST?
When it is 12:00 AM (midnight) in Vietnam (ICT), it is +2h later in JST (JST).
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