Japan Standard Time to IST Conversion & Schedule Sync
Calculate IST local time from Japan Standard Time (JST). JST (Japan Standard Time, UTC+9) is strictly 3 hours and 30 minutes ahead of IST (UTC+5:30). Ne Business overlap matrix & enterprise schedule sync.
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Japan Standard Time (JST)
India Standard Time (IST)
🕒 24-Hour Conversion Table: JST to IST
Complete hour-by-hour comparative lookup table for international scheduling.
| JST Time (Origin) | JST Status | IST Time (Converted) | IST Status | Day Shift | Meeting Suitability |
|---|---|---|---|---|---|
| 12:00 AM | Sleep | 08:30 PM | Personal | Previous Day | ⚪ Off-Hours |
| 01:00 AM | Sleep | 09:30 PM | Personal | Previous Day | ⚪ Off-Hours |
| 02:00 AM | Sleep | 10:30 PM | Sleep | Previous Day | ⚪ Off-Hours |
| 03:00 AM | Sleep | 11:30 PM | Sleep | Previous Day | ⚪ Off-Hours |
| 04:00 AM | Sleep | 12:30 AM | Sleep | Same Day | ⚪ Off-Hours |
| 05:00 AM | Sleep | 01:30 AM | Sleep | Same Day | ⚪ Off-Hours |
| 06:00 AM | Sleep | 02:30 AM | Sleep | Same Day | ⚪ Off-Hours |
| 07:00 AM | Personal | 03:30 AM | Sleep | Same Day | ⚪ Off-Hours |
| 08:00 AM | Personal | 04:30 AM | Sleep | Same Day | ⚪ Off-Hours |
| 09:00 AM | Work | 05:30 AM | Sleep | Same Day | ⚪ Off-Hours |
| 10:00 AM | Work | 06:30 AM | Sleep | Same Day | ⚪ Off-Hours |
| 11:00 AM | Work | 07:30 AM | Personal | Same Day | ⚪ Off-Hours |
| 12:00 PM | Work | 08:30 AM | Personal | Same Day | 🟢 Golden Overlap |
| 01:00 PM | Work | 09:30 AM | Work | Same Day | 🟢 Golden Overlap |
| 02:00 PM | Work | 10:30 AM | Work | Same Day | 🟢 Golden Overlap |
| 03:00 PM | Work | 11:30 AM | Work | Same Day | 🟢 Golden Overlap |
| 04:00 PM | Work | 12:30 PM | Work | Same Day | 🟢 Golden Overlap |
| 05:00 PM | Personal | 01:30 PM | Work | Same Day | 🟢 Golden Overlap |
| 06:00 PM | Personal | 02:30 PM | Work | Same Day | 🟢 Golden Overlap |
| 07:00 PM | Personal | 03:30 PM | Work | Same Day | 🟢 Golden Overlap |
| 08:00 PM | Personal | 04:30 PM | Work | Same Day | ⚪ Off-Hours |
| 09:00 PM | Personal | 05:30 PM | Personal | Same Day | ⚪ Off-Hours |
| 10:00 PM | Sleep | 06:30 PM | Personal | Same Day | ⚪ Off-Hours |
| 11:00 PM | Sleep | 07:30 PM | Personal | Same Day | ⚪ Off-Hours |
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Overview & Capabilities
Coordinate distributed operations and international deliverables between Japan Standard Time (JST) and India Standard Time (IST) using our multi-region time sync console. Whether managing remote sprints from Tokyo, Osaka, Kyoto, delegating tasks to counterparts in New Delhi, Mumbai, Bengaluru, or standardizing system schedules across India & South Asia, this reference delivers verified time offsets, cross-border meeting windows, and seasonal clock changes.
Synchronized Offset: JST (Japan Standard Time, UTC+9) is strictly 3 hours and 30 minutes ahead of IST (UTC+5:30). Neither region observes Daylight Saving.
Time Adjustment: IST = JST - 3:30 hours
Optimal Calling Slot: 12:30 PM – 6:00 PM JST (corresponds to 9:00 AM – 2:30 PM IST)Tokyo engineers and Japanese corporate executives coordinating with Indian IT service providers and automotive design centers.
How to Use
Key Features
Common Use Cases
Tips & Best Practices
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Frequently Asked Questions
Q How many hours difference is there between Japan Standard Time (JST) and India Standard Time (IST)?
JST (Japan Standard Time, UTC+9) is strictly 3 hours and 30 minutes ahead of IST (UTC+5:30). Neither region observes Daylight Saving. JST operates at UTC+9, while IST runs at UTC+5:30.
Q When it is 5:00 PM in JST, what time is it in IST?
To determine 5:00 PM JST in IST, apply the formula `IST = JST - 3:30 hours`. Consult the 24-hour table above to see the exact time and whether the date rolls over.
Q What is the most effective meeting time between teams in JST and IST?
The golden collaboration window is **12:30 PM – 6:00 PM JST (corresponds to 9:00 AM – 2:30 PM IST)**, which represents the best balance of active working hours across both territories.
Q Does Japan Standard Time (JST) change its clocks for Daylight Saving Time?
Japan Standard Time does not observe Daylight Saving Time and stays on standard time all year.
Q What are the primary economic centers in JST and IST?
Major hubs in **JST** include **Tokyo, Osaka, Kyoto, Nagoya, Yokohama, Sapporo**, while primary hubs in **IST** include **New Delhi, Mumbai, Bengaluru, Hyderabad, Chennai, Kolkata, Colombo**.
Q Can I convert backwards from IST to JST?
Use the interactive swap button between the timezones to convert in reverse instantly.