What is the time difference between JST and IST?

JST is 3.5 hours behind IST. JST is UTC+9 and IST is UTC+5.5.

What is 12 PM JST in IST?

12 PM JST (noon) is 8:30 AM IST.

What are the best meeting times between JST and IST?

Best overlap hours: 12 PM JST = 8:30 AM IST; 1 PM JST = 9:30 AM IST; 2 PM JST = 10:30 AM IST; 3 PM JST = 11:30 AM IST; 4 PM JST = 12:30 PM IST.

JST to IST Time Converter

Japan Standard Time → India Standard Time

JST

UTC+9

Japan Standard Time

offset

-3.5h

IST is 3.5h behind

IST

UTC+5.5

India Standard Time

Japan Standard Time (JST) is 3.5 hours behind India Standard Time (IST). When it is noon in JST, it is 8:30 AM in IST. This offset is fixed year-round.

Meeting planner tool Reverse: IST to JST

Cities in JST

🇯🇵Tokyo 🇯🇵Osaka

Cities in IST

🇮🇳Mumbai 🇮🇳Delhi 🇮🇳Bangalore 🇮🇳Chennai 🇮🇳Kolkata

All 24 Hours — JST to IST

Click any row to see the full detail page. Current hour in JST is highlighted.

Both business hoursPartial overlap

12 AM6 AM12 PM6 PM11 PM

Best Meeting Times — JST & IST

Recommended windows where both JST and IST participants are within working hours (8 AM–6 PM).

JSTISTRatingDetail page

12 PM

8:30 AM

Best

12 PM →

1 PM

9:30 AM

Best

1 PM →

2 PM

10:30 AM

Best

2 PM →

3 PM

11:30 AM

Best

3 PM →

4 PM

12:30 PM

Best

4 PM →

Tip: When scheduling between JST and IST, aim for the “Best” windows above. These times keep both parties within normal working hours, avoiding early-morning or late-evening fatigue.