Home/Convert/JST to KST Converter

JST to KST Converter

Japan to Korea — the highest-volume bilateral pair in northeast Asia. Geographically adjacent with strong trade, tourism, and cultural ties. 0-hour gap (both UTC+9) makes scheduling trivial.

Time Zone Converter

Compare Times

JST	KST
8:00 AM JST	8:00 AM KST
9:00 AM JST	9:00 AM KST
10:00 AM JST	10:00 AM KST
11:00 AM JST	11:00 AM KST
12:00 PM JST	12:00 PM KST
1:00 PM JST	1:00 PM KST
2:00 PM JST	2:00 PM KST
3:00 PM JST	3:00 PM KST
4:00 PM JST	4:00 PM KST
5:00 PM JST	5:00 PM KST
6:00 PM JST	6:00 PM KST
7:00 PM JST	7:00 PM KST
8:00 PM JST	8:00 PM KST

Common Time Conversions

EST · New York →

EST → CST EST → MST EST → PST EST → AKST EST → HST EST → UTC EST → GMT EST → IST EST → CET EST → JST

CST · Chicago →

CST → EST CST → MST CST → PST CST → AKST CST → HST CST → UTC CST → GMT CST → IST CST → CET CST → JST

MST · Denver →

MST → EST MST → CST MST → PST MST → AKST MST → HST MST → UTC MST → GMT MST → IST MST → CET MST → JST

PST · Los Angeles →

PST → EST PST → CST PST → MST PST → AKST PST → HST PST → UTC PST → GMT PST → IST PST → CET PST → JST

AKST · Anchorage →

AKST → EST AKST → CST AKST → MST AKST → PST AKST → HST AKST → UTC AKST → GMT AKST → IST AKST → CET AKST → JST

HST · Honolulu →

HST → EST HST → CST HST → MST HST → PST HST → AKST HST → UTC HST → GMT HST → IST HST → CET HST → JST

UTC · Universal →

UTC → EST UTC → CST UTC → MST UTC → PST UTC → AKST UTC → HST UTC → GMT UTC → IST UTC → CET UTC → JST

GMT · London →

GMT → EST GMT → CST GMT → MST GMT → PST GMT → AKST GMT → HST GMT → UTC GMT → IST GMT → CET GMT → JST

IST · New Delhi →

IST → EST IST → CST IST → MST IST → PST IST → AKST IST → HST IST → UTC IST → GMT IST → CET IST → JST

CET · Paris →

CET → EST CET → CST CET → MST CET → PST CET → AKST CET → HST CET → UTC CET → GMT CET → IST CET → JST

JST · Tokyo →

JST → EST JST → CST JST → MST JST → PST JST → AKST JST → HST JST → UTC JST → GMT JST → IST JST → CET

How Time Zone Conversion Works

Time zone conversion works by comparing the UTC offset of one location to another. Every city or region is measured relative to Coordinated Universal Time (UTC), which acts as the global reference point for civil time.

JST and KST share the same standard UTC offset.

Daylight Saving Time: Neither JST nor KST observes Daylight Saving Time. The 0-hour offset is constant year-round with no seasonal variation.

Best Meeting Times: JST & KST

Scheduling difficulty:Easy overlap

JST

09:00–17:00

Japan Time

KST

09:00–17:00

Korea Time

Recommended time: 13:00 JST / 13:00 KST

manufacturing supply chainsmanufacturingbusiness meetings

DST schedule for 2026

Current-year daylight saving start and end dates for the selected zones.

JST · Japan Time

Standard offset +09:00

Does not observe DST

Japan Time remains on a constant standard offset for the year.

Japan has not observed daylight saving time since 1951.

KST · Korea Time

Standard offset +09:00

Does not observe DST

Korea Time remains on a constant standard offset for the year.

South Korea does not currently observe DST; temporary DST experiments ended in 1988.

Principal Cities

JST — Japan Time

TokyoJapan
YokohamaJapan
OsakaJapan
NagoyaJapan

KST — Korea Time

SeoulSouth Korea
BusanSouth Korea
IncheonSouth Korea
DaeguSouth Korea

Flight Information

Route

NRT ↔ ICN

Avg. flight time

Direct flights

Available

~2h direct flight.

Convert from Japan Time

Convert from

JSTESTView converter JSTCSTView converter JSTMSTView converter JSTPSTView converter JSTAKSTView converter JSTHSTView converter

Convert to Korea Time

Convert to

AEDTKSTView converter NZSTKSTView converter NZDTKSTView converter ACSTKSTView converter GSTKSTView converter ESTKSTView converter