World Timezones

IST to KST Converter

Compare KST to IST instead
India Standard Time10:06 amFri, Jun 5
India Standard TimeIST
Asia · UTC+5:30
10:06 amFri, Jun 5
12a
1a
2a
3a
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p
Korea Standard TimeKST
Asia · UTC+9
1:36 pmFri, Jun 5
3a
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p
12a
1a
2a

Offset

The time difference between India Standard Time and Korea Standard Time is 3.5 hours.

3.5 hours

India Standard Time (IST) is behind Korea Standard Time (KST).

IST: UTC+5:30

KST: UTC+9

Neither India Standard Time nor Korea Standard Time is currently observing daylight saving time.

When to schedule

Business-hours overlap: 9 AM–2 PM in India Standard Time (12 PM–5 PM in Korea Standard Time).

Both teams are in working hours during this window on weekdays.

Suggested time: 11:00 AM India Standard Time (2:30 PM Korea Standard Time).

Public holidays in 2026

National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.

South Korea

  • New Year's DayThu, Jan 1
  • Lunar New YearMon, Feb 16
  • Lunar New YearTue, Feb 17
  • Lunar New YearWed, Feb 18
  • Independence Movement DayMon, Mar 2
  • Labour DayFri, May 1
  • Children's DayTue, May 5
  • Buddha's BirthdayMon, May 25
  • Local Election DayWed, Jun 3
  • Memorial DaySat, Jun 6
  • Constitution DayFri, Jul 17
  • Liberation DayMon, Aug 17
  • ChuseokThu, Sep 24
  • ChuseokFri, Sep 25
  • ChuseokSat, Sep 26
  • National Foundation DayMon, Oct 5
  • Hangul DayFri, Oct 9
  • Christmas DayFri, Dec 25

About these zones

India Standard Time is also known as IST. To call India, dial +91.

Korea Standard Time is also known as KST. To call South Korea, dial +82.

Korea Standard Time is approximately 3,500 miles northeast of India Standard Time.

Quick reference

Full 24-hour conversion table — tap any time to open it in the converter.

ISTKSTDay
12:00 am3:30 amSame day
1:00 am4:30 amSame day
2:00 am5:30 amSame day
3:00 am6:30 amSame day
4:00 am7:30 amSame day
5:00 am8:30 amSame day
6:00 am9:30 amSame day
7:00 am10:30 amSame day
8:00 am11:30 amSame day
9:00 am12:30 pmSame day
10:00 am1:30 pmSame day
11:00 am2:30 pmSame day
12:00 pm3:30 pmSame day
1:00 pm4:30 pmSame day
2:00 pm5:30 pmSame day
3:00 pm6:30 pmSame day
4:00 pm7:30 pmSame day
5:00 pm8:30 pmSame day
6:00 pm9:30 pmSame day
7:00 pm10:30 pmSame day
8:00 pm11:30 pmSame day
9:00 pm12:30 am+1 day
10:00 pm1:30 am+1 day
11:00 pm2:30 am+1 day

Daylight saving time

Neither India Standard Time nor Korea Standard Time observes daylight saving time. The offset between these zones remains constant year-round.

See the daylight saving time page for transition dates across every time zone.

Daylight today

India Standard Time
Sunrise
6:01 AM
Sunset
7:15 PM
Day length
13h 14m
Korea Standard Time
Sunrise
5:12 AM
Sunset
7:51 PM
Day length
14h 38m

Daylight overlap: 10h 19m — 6:01 AM–4:21 PM in India Standard Time (9:31 AM–7:51 PM in Korea Standard Time). Both locations are in daylight during this window.

Cities in these zones

Browse all cities to see the current local time anywhere.

Airports in these zones

Airports in India Standard Time

  • BOM
  • NMI
  • DEL
  • BLR
  • HYD
  • AMD
  • MAA
  • CCU
  • STV
  • PNQ

Airports in Korea Standard Time

  • GMP
  • ICN
  • PUS
  • TAE
  • CJJ
  • KWJ
  • MWX

Related conversions

Common conversions

What is 9:00 am IST in KST?
9:00 am IST is 12:30 pm KST.
What is 12:00 pm IST in KST?
12:00 pm IST is 3:30 pm KST.
What is 12:30 pm IST in KST?
12:30 pm IST is 4:00 pm KST.
What is 2:00 pm IST in KST?
2:00 pm IST is 5:30 pm KST.
What is 5:00 pm IST in KST?
5:00 pm IST is 8:30 pm KST.
What is 11:30 pm IST in KST?
11:30 pm IST is 3:00 am KST, the next day.