India and Vietnam Working Hours Overlap in IST
Vietnam · Asia-Pacific
24-Hour Timeline
Overlap for Different Work Hours
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| Vietnam Hours | Overlap (IST) | Local Time | Duration |
|---|---|---|---|
| 8:00 AM – 5:00 PM | 9:00 AM – 3:30 PM IST | 10:30 AM – 5:00 PM | 6.5 hrs |
| 9:00 AM – 6:00 PM | 9:00 AM – 4:30 PM IST | 10:30 AM – 6:00 PM | 7.5 hrs |
| 10:00 AM – 7:00 PM | 9:00 AM – 5:30 PM IST | 10:30 AM – 7:00 PM | 8.5 hrs |
Note: Work week is Mon–Fri
About This Overlap
Vietnam is South-East Asia's emerging manufacturing powerhouse and strategic ASEAN partner. IST is 1h 30m ahead of ICT year-round — same as Thailand. India's 9 AM = 7:30 AM HCMC; India's 5 PM = 3:30 PM Vietnam — excellent overlap. Vietnam–India defence ties are strategic (submarine cooperation). Vietnamese manufacturing attracts Indian FDI; Indian textile imports compete with Vietnamese goods.
Last updated: 20 March 2026
Frequently Asked Questions
When do India and Vietnam share working hours?
Overlap: 9:00 AM – 4:30 PM IST — 7.5 hours
How many hours overlap does IST have with Vietnam?
Indian Standard Time (IST, UTC+5:30) and Vietnam have a 7.5-hour overlap window. The exact span depends on daylight saving time in Vietnam.
What is the best time to schedule a call between India and Vietnam?
Schedule calls between 9:00 AM and 4:30 PM IST (10:30 AM–6:00 PM Vietnam local time). This ensures both parties are within business hours.
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