Vietnam to Delhi
-1h 30mVietnam
ICTSOURCEDelhi
ISTGreen rows indicate typical business hours (9 AM - 5 PM)
ICT and IST on the World Map
The map below highlights the ICT (Indochina Time) and IST (India 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.
IST – India Standard Time
UTC+05:30India Standard Time (IST) is the time zone for India and Sri Lanka, 5 hours and 30 minutes ahead of UTC.
- •India is 10 hours 30 minutes ahead of EST and 5 hours 30 minutes ahead of GMT.
- •India uses a single time zone despite spanning 30° of longitude.
- •IST is one of only a handful of time zones with a 30-minute offset.
- •IST is the most populous single time zone in the world with over 1.4 billion people.
- •The Bombay Stock Exchange (BSE) and National Stock Exchange (NSE) operate on IST.
About Delhi
WikipediaDelhi operates on India Standard Time (IST), UTC+5:30. As India's capital, Delhi time is synchronized with Mumbai and India's National Stock Exchange.
Delhi serves as India's political capital while Mumbai is the financial capital.
Time Conversion Guide: Vietnam to Delhi
Vietnam runs on Indochina Time (ICT) at UTC+07:00. Delhi runs on India Standard Time (IST) at UTC+05:30. That puts Vietnam 1 hour 30 minutes behind Delhi — a difference of -1h 30m at the current offsets.
In practice, when it is 9:00 AM in Vietnam it is 7:30 AM in Delhi. Midnight in Vietnam is 10:30 PM in Delhi. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Vietnam to Delhi time conversion table
| Vietnam (ICT) | Delhi (IST) | Day |
|---|---|---|
| 12:00 AM | 10:30 PM | previous day |
| 6:00 AM | 4:30 AM | same day |
| 7:00 AM | 5:30 AM | same day |
| 8:00 AM | 6:30 AM | same day |
| 9:00 AM | 7:30 AM | same day |
| 12:00 PM | 10:30 AM | same day |
| 3:00 PM | 1:30 PM | same day |
| 5:00 PM | 3:30 PM | same day |
| 6:00 PM | 4:30 PM | same day |
| 9:00 PM | 7:30 PM | same day |
Why people convert Vietnam to Delhi time
- Scheduling a call from Vietnam to Delhi: a 10:00 AM start in Vietnam lands at 8:30 AM in Delhi, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Vietnam and Delhi are inside the 9-to-5 working day between 10:30 AM and 5:00 PM ICT time (9:00 AM–3:30 PM IST). That is roughly 6 hours 30 minutes of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in Vietnam is 6:30 PM in Delhi 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 30m gap is not.
- Block 10:30 AM–5:00 PM ICT as the recurring meeting window if you work primarily from Vietnam and need Delhi 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 IST (India Standard Time)
India Standard Time (IST) is the time observed throughout India and Sri Lanka. It is based on the 82.5°E meridian, passing through Mirzapur in Uttar Pradesh. India uses a single time zone despite spanning roughly 30° of longitude, which has been debated. IST does not observe daylight saving time. India is the world's most populous country, making IST one of the most-used time zones globally. The IT outsourcing industry and call centers operate primarily on IST, making the EST-to-IST conversion one of the most searched timezone conversions.
Best time to call between Vietnam and Delhi
Both Vietnam and Delhi sit inside the 9 AM – 5 PM working day between 10:30 AM–5:00 PM ICT, which is 9:00 AM–3:30 PM IST. That gives roughly 6 hours and 30 minutes of shared time — the safest window for a live call or meeting.
Business hours overlap
Vietnam and Delhi share 6 hours of working-hours overlap (10:30 AM–5:00 PM ICT), so scheduling a live meeting is straightforward.
Vietnam is 1 hour 30 minutes behind Delhi (ICT UTC+07:00 → IST UTC+05:30). The shared working window is 10:30 AM–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:
Frequently Asked Questions
What is the time difference between Vietnam and Delhi?
Vietnam (ICT, UTC+07:00) is 1 hour 30 minutes behind Delhi (IST, UTC+05:30). The gap is currently -1h 30m.
How do I convert Vietnam time to Delhi time?
Add -1h 30m to Vietnam local time. For example, 9:00 AM in Vietnam is 7:30 AM in Delhi.
What time is it in Delhi right now?
Delhi uses IST at UTC+05:30. Use the live converter at the top of this page — it updates in real time and already accounts for the -1h 30m offset from Vietnam.
What is the best time to call Delhi from Vietnam?
Call between 10:30 AM and 5:00 PM ICT — that maps to 9:00 AM–3:30 PM IST and keeps both parties inside the working day.
Which is behind, Vietnam or Delhi?
Vietnam is 1 hour 30 minutes behind Delhi. When it is 12:00 PM in Vietnam it is 10:30 AM in Delhi.
Do Vietnam and Delhi use different time zones?
Vietnam (Vietnam) uses ICT at UTC+07:00, while Delhi (India) uses IST at UTC+05:30. The IANA identifiers are Asia/Ho_Chi_Minh and Asia/Kolkata.
Does daylight saving time affect the Vietnam–Delhi difference?
Neither zone observes daylight saving time, so the -1h 30m offset between Vietnam and Delhi 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 Delhi?
Not normally. The -1h 30m gap only pushes the date over the previous day.
What is the time difference between Vietnam and Delhi?
Delhi is -1h 30m from Vietnam.
What timezone is Vietnam in?
Vietnam operates on its local timezone.
What timezone is Delhi in?
Delhi operates on India Standard Time (IST), UTC+5:30. As India's capital, Delhi time is synchronized with Mumbai and India's National Stock Exchange.
What are the business hours in Delhi?
Standard business hours in Delhi are 9:30 AM - 5:30 PM IST.
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 IST timezone?
Major cities in the IST timezone include Mumbai, Delhi, Bangalore, Kolkata, Chennai, Hyderabad, Pune, Ahmedabad.
What is the UTC offset for IST?
India Standard Time (IST) is at UTC+05:30.
What should I know about the IST timezone?
India is 10 hours 30 minutes ahead of EST and 5 hours 30 minutes ahead of GMT. India uses a single time zone despite spanning 30° of longitude.
When is it midnight in Vietnam, what time is it in Delhi?
When it is 12:00 AM (midnight) in Vietnam (ICT), it is -1h 30m later in Delhi (IST).
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