India and Japan Working Hours Overlap in IST
Japan · Asia-Pacific
24-Hour Timeline
Overlap for Different Work Hours
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| Japan Hours | Overlap (IST) | Local Time | Duration |
|---|---|---|---|
| 8:00 AM – 5:00 PM | 9:00 AM – 1:30 PM IST | 12:30 PM – 5:00 PM | 4.5 hrs |
| 9:00 AM – 6:00 PM | 9:00 AM – 2:30 PM IST | 12:30 PM – 6:00 PM | 5.5 hrs |
| 10:00 AM – 7:00 PM | 9:00 AM – 3:30 PM IST | 12:30 PM – 7:00 PM | 6.5 hrs |
Note: Work week is Mon–Fri
About This Overlap
Japan is the world's third-largest economy and home to the Tokyo Stock Exchange. SoftBank's Vision Fund (headquartered Tokyo) is India's largest tech startup investor — deployed $10B+ into Flipkart, Ola, Paytm. IST is 3h 30m behind JST year-round (no DST). India's 9 AM = 12:30 PM Tokyo; India's 4 PM = 7:30 PM Tokyo — reasonable late-afternoon overlap. Japanese auto giants (Toyota, Honda, Suzuki) all manufacture in India.
Last updated: 20 March 2026
Frequently Asked Questions
When do India and Japan share working hours?
Overlap: 9:00 AM – 2:30 PM IST — 5.5 hours
How many hours overlap does IST have with Japan?
Indian Standard Time (IST, UTC+5:30) and Japan have a 5.5-hour overlap window. The exact span depends on daylight saving time in Japan.
What is the best time to schedule a call between India and Japan?
Schedule calls between 9:00 AM and 2:30 PM IST (12:30 PM–6:00 PM Japan local time). This ensures both parties are within business hours.
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