TimeToZone

IST to Osaka Time Converter

JST is 3 hours 30 minutes ahead of IST. 9:00 AM IST = 12:30 PM JST.

⇄ Swap
ISTfrom
India Standard Time
--:--
 
Osaka
Osaka, Japan
--:--
 

JST is 3 hours 30 minutes ahead of IST. To convert IST to Osaka Time, add 3 hours 30 minutes to the IST time: 9:00 AM IST = 12:30 PM JST.

IST (India Time) is used in India and Sri Lanka (UTC+5:30, no daylight saving time). Osaka Time (Osaka time) is used in Osaka, Japan.

IST here means India Standard Time, not Irish or Israel Standard Time.

IST to Osaka Time time conversion table

IST to Osaka Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.

ISTOsaka TimeDay
12:00 AM IST3:30 AM JSTnight
1:00 AM IST4:30 AM JSTnight
2:00 AM IST5:30 AM JSTnight
3:00 AM IST6:30 AM JST—
4:00 AM IST7:30 AM JST—
5:00 AM IST8:30 AM JST—
6:00 AM IST9:30 AM JST—
7:00 AM IST10:30 AM JST—
8:00 AM IST11:30 AM JST—
9:00 AM IST12:30 PM JSTwork hours
10:00 AM IST1:30 PM JSTwork hours
11:00 AM IST2:30 PM JSTwork hours
12:00 PM IST3:30 PM JSTwork hours
1:00 PM IST4:30 PM JSTwork hours
2:00 PM IST5:30 PM JST—
3:00 PM IST6:30 PM JST—
4:00 PM IST7:30 PM JST—
5:00 PM IST8:30 PM JST—
6:00 PM IST9:30 PM JST—
7:00 PM IST10:30 PM JSTnight
8:00 PM IST11:30 PM JSTnight
9:00 PM IST12:30 AM JSTnext day
10:00 PM IST1:30 AM JSTnext day
11:00 PM IST2:30 AM JSTnext day
  • Work rows — 9 AM–5 PM in both places
  • Night in the destination (10 PM–6 AM)

How to convert IST to Osaka Time

Add 3 hours 30 minutes to the IST time to get Osaka Time.

Example: 9:00 AM IST = 12:30 PM JST.

Across midnight: 10:00 PM IST = 1:30 AM JST (next day). The date changes, so always check the day as well as the hour.

Time difference between IST and Osaka Time

The time difference between IST and Osaka Time is 3 hours 30 minutes all year – JST is ahead of IST.

IST and Osaka Time during daylight saving time

  • IST does not observe daylight saving time; it stays on UTC+5:30 all year.
  • Osaka Time does not observe daylight saving time; it stays on UTC+9 all year.

Best time for a meeting between IST and Osaka Time

IST and Osaka Time share 4 hours 30 minutes of the 9 AM–5 PM working day. Any time between 9:00 AM and 1:30 PM IST lands between 12:30 PM and 5:00 PM JST, inside working hours for both.

Plan a meeting across more time zones.

IST to Osaka Time FAQ

What is the time difference between IST and Osaka Time?

JST is 3 hours 30 minutes ahead of IST all year. 9:00 AM IST = 12:30 PM JST.

What is 9 AM IST in Osaka Time?

9:00 AM IST is 12:30 PM JST.

What is 12 PM (noon) IST in Osaka Time?

12:00 PM IST is 3:30 PM JST.

Is Osaka Time ahead of or behind IST?

JST is 3 hours 30 minutes ahead of IST, so it is later in Osaka 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 Osaka Time change for daylight saving time?

No. Osaka 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 Osaka Time?

IST and Osaka Time share 4 hours 30 minutes of the 9 AM–5 PM working day. Any time between 9:00 AM and 1:30 PM IST lands between 12:30 PM and 5:00 PM JST, inside working hours for both.

Related conversions

Convert Osaka Time to IST

Convert IST to other time zones

Convert other time zones to Osaka Time

Learn more

Updated 7 November 2026. Time zone data: IANA tz database.