IST to Vietnam Time Converter
ICT is 1 hour 30 minutes ahead of IST. 9:00 AM IST = 10:30 AM ICT.
ICT is 1 hour 30 minutes ahead of IST. To convert IST to Vietnam Time, add 1 hour 30 minutes to the IST time: 9:00 AM IST = 10:30 AM ICT.
IST (India Time) is used in India and Sri Lanka (UTC+5:30, no daylight saving time). Vietnam Time (Vietnam time) is used in Vietnam.
IST here means India Standard Time, not Irish or Israel Standard Time.
IST to Vietnam Time time conversion table
IST to Vietnam Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| IST | Vietnam Time |
|---|---|
| 12:00 AM | 1:30 AM |
| 1:00 AM | 2:30 AM |
| 2:00 AM | 3:30 AM |
| 3:00 AM | 4:30 AM |
| 4:00 AM | 5:30 AM |
| 5:00 AM | 6:30 AM |
| 6:00 AM | 7:30 AM |
| 7:00 AM | 8:30 AM |
| IST | Vietnam Time |
|---|---|
| 8:00 AM | 9:30 AM |
| 9:00 AM | 10:30 AM |
| 10:00 AM | 11:30 AM |
| 11:00 AM | 12:30 PM |
| 12:00 PM | 1:30 PM |
| 1:00 PM | 2:30 PM |
| 2:00 PM | 3:30 PM |
| 3:00 PM | 4:30 PM |
| IST | Vietnam Time |
|---|---|
| 4:00 PM | 5:30 PM |
| 5:00 PM | 6:30 PM |
| 6:00 PM | 7:30 PM |
| 7:00 PM | 8:30 PM |
| 8:00 PM | 9:30 PM |
| 9:00 PM | 10:30 PM |
| 10:00 PM | 11:30 PM |
| 11:00 PM | 12:30 AM+1 |
Conversion table from IST to Vietnam Time for 7 Nov 2026. A tick marks hours that fall between 9 AM and 5 PM in both places. +1 means the next day in Vietnam Time, −1 the previous day.
- ✓ marks 9 AM–5 PM in both places
- Greyed times are night in the destination (10 PM–6 AM)
How to convert IST to Vietnam Time
Add 1 hour 30 minutes to the IST time to get Vietnam Time.
Example: 9:00 AM IST = 10:30 AM ICT.
Across midnight: 11:00 PM IST = 12:30 AM ICT (next day). The date changes, so always check the day as well as the hour.
Time difference between IST and Vietnam Time
The time difference between IST and Vietnam Time is 1 hour 30 minutes all year – ICT is ahead of IST.
IST and Vietnam Time during daylight saving time
- IST does not observe daylight saving time; it stays on UTC+5:30 all year.
- Vietnam Time does not observe daylight saving time; it stays on UTC+7 all year.
Best time for a meeting between IST and Vietnam Time
IST and Vietnam Time share 6 hours 30 minutes of the 9 AM–5 PM working day. Any time between 9:00 AM and 3:30 PM IST lands between 10:30 AM and 5:00 PM ICT, inside working hours for both.
IST to Vietnam Time FAQ
What is the time difference between IST and Vietnam Time?
ICT is 1 hour 30 minutes ahead of IST all year. 9:00 AM IST = 10:30 AM ICT.
What is 9 AM IST in Vietnam Time?
9:00 AM IST is 10:30 AM ICT.
What is 12 PM (noon) IST in Vietnam Time?
12:00 PM IST is 1:30 PM ICT.
Is Vietnam Time ahead of or behind IST?
ICT is 1 hour 30 minutes ahead of IST, so it is later in Vietnam Time than in IST.
Does IST change for daylight saving time?
No. IST stays on the same offset all year, so conversions never shift for daylight saving time.
Does Vietnam Time change for daylight saving time?
No. Vietnam Time stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between IST and Vietnam Time?
IST and Vietnam Time share 6 hours 30 minutes of the 9 AM–5 PM working day. Any time between 9:00 AM and 3:30 PM IST lands between 10:30 AM and 5:00 PM ICT, inside working hours for both.
Related conversions
Convert Vietnam Time to IST
Convert IST to other time zones
Convert other time zones to Vietnam Time
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.