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Jeju City to EST Time Converter

Updating current time…
Jeju City
South Korea
KST
12am
3am
6am
9am
12pm
3pm
6pm
9pm
EST
Eastern Standard Time
GMT -5
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

For most of the year, Jeju City is 13 hours ahead of EDT. During seasonal clock changes, Jeju City is 14 hours ahead of EST.

For most of the year, working hours of 9:00 am to 5:00 pm in Jeju City correspond to 8:00 pm (previous day) to 4:00 am in EDT. During seasonal clock changes, working hours of 9:00 am to 5:00 pm in Jeju City correspond to 7:00 pm (previous day) to 3:00 am in EST.

Compare Jeju City time with EST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

KST (Korea Standard Time) is 14 hours ahead of Eastern Standard Time
9:00 pm21:00 in Jeju City, South Korea is 7:00 am07:00 in EST

Jeju City to EST call time
Best time for a conference call or a meeting is between 7:30am-8:30am in Jeju City which corresponds to 5:30pm-6:30pm in EST (previous day)

9:00 pm21:00 KST (Korea Standard Time) (Jeju City, South Korea). Offset UTC +9:00 hours
7:00 am07:00 Eastern Standard Time (EST). Offset UTC -5:00 hours

9:00 pm21:00 Jeju City, South Korea / 7:00 am07:00 EST

Jeju City, South KoreaEST
12am (midnight)10am
1am11am
2am12pm (noon)
3am1pm
4am2pm
5am3pm
6am4pm
7am5pm
8am6pm
9am7pm
10am8pm
11am9pm
12pm (noon)10pm
1pm11pm
2pm12am (midnight)
3pm1am
4pm2am
5pm3am
6pm4am
7pm5am
8pm6am
9pm7am
10pm8am
11pm9am
00:0010:00
01:0011:00
02:0012:00
03:0013:00
04:0014:00
05:0015:00
06:0016:00
07:0017:00
08:0018:00
09:0019:00
10:0020:00
11:0021:00
12:0022:00
13:0023:00
14:0000:00
15:0001:00
16:0002:00
17:0003:00
18:0004:00
19:0005:00
20:0006:00
21:0007:00
22:0008:00
23:0009:00

Jeju City Information

Time Zone

Abbreviation / Name
KST - Korea Standard Time
UTC / GMT Offset
+9:00 hours during Korea Standard Time, currently in use.

Jeju City Facts

Country
South Korea
Alternative Names
CJU, Chedzhu, Cheju, Chu-sung, Chyei Chyu, Czedzu, Czedżu, Jeju, Jeju City, Kota Jeju, Saishu, Saishū, Saisyu, Saisyu Yu, Saisyū, Saisyū Yū, Tsche-dschu, Tse-tsiu, Tsitcheou, Tzetzou, chjw, jeju, jejusi, ji zhou, ji zhou shi, jyjw, Τζέτζου, Чеджу, جيجو, چجو, 済州市, 濟州, 濟州市, 제주, 제주시
Population
408,364
Currency
Won (KRW)
Geographic Coordinates
33° 30' N Latitude / 126° 31' E Longitude
International Dialing Code
+82

Eastern Standard Time

Offset: EST is 5 hours behind Greenwich Mean Time (GMT) and is used in North America

Countries using this time zone: Bahamas, Canada, Haiti, Jamaica, Cayman Islands, Mexico, Panama, Turks & Caicos Is, United States

Principal Cities: The largest city in the EST time zone is New York City in the United States, with about 8.175 million people. Other major cities in this time zone include Toronto, Montreal, Brooklyn, Borough of Queens.

French: HNE - Heure Normale de l'Est

Spanish: ET - Tiempo del Este, ET - Zona Sureste

EST Time Zone Geo Map
EST timezone map

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Eastern Daylight Time (EDT).

Daylight saving time clock moves back for one hour from 2am to 1amStart: Eastern Standard Time (EST) started on Sunday, November 2, 2025 at 2:00 am local time and clocks were set one hour back to Sunday, November 2, 2025, 1:00 am. Standard time starts annually on the first Sunday of November.

Daylight saving time clock moves forward for one hour from 2am to 3amEnd: Eastern Standard Time (EST) ends on Sunday, March 8, 2026 at 2:00 am local time and clocks are set one hour forward to Sunday, March 8, 2026, 3:00 am local daylight time instead. Standard time ends annually on the second Sunday of March.

EST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -05 - basic short
  • -0500 - basic
  • -05:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0500 - sign character (-) followed by a four digit time providing hours (05) and minutes (00) of the offset. Indicates an offset of five hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Romeo - Military abbreviation for EST
  • R - short form of 'Romeo'
IANA/Olson: Reflects EST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Atikokan
  • America/Cancun
  • America/Cayman
  • America/Coral_Harbour
  • America/Detroit
  • America/Fort_Wayne
  • America/Grand_Turk
  • America/Indiana/Indianapolis
  • America/Indiana/Marengo
  • America/Indiana/Petersburg
  • America/Indiana/Vevay
  • America/Indiana/Vincennes
  • America/Indiana/Winamac
  • America/Indianapolis
  • America/Iqaluit
  • America/Jamaica
  • America/Kentucky/Louisville
  • America/Kentucky/Monticello
  • America/Louisville
  • America/Montreal
  • America/Nassau
  • America/New_York
  • America/Nipigon
  • America/Panama
  • America/Pangnirtung
  • America/Port-au-Prince
  • America/Thunder_Bay
  • America/Toronto
  • Canada/Eastern
  • EST
  • EST5EDT
  • Jamaica
  • US/East-Indiana
  • US/Eastern
  • US/Michigan
Time zones with the GMT -5 offset:
  • CDT - Central Daylight Time
  • EST - Eastern Standard Time
  • ET - Eastern Time
  • COT - Colombia Time
  • CST - Cuba Standard Time
  • EASST - Easter Island Summer Time
  • ECT - Ecuador Time
  • PET - Peru Time
  • R - Romeo Time Zone
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT