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KST to EST to NST

KST
Korea Standard Time
GMT +9
EDT/EST
Eastern Daylight Time
GMT -4
EST automatically adjusted to EDT time zone, that is in use
NDT/NST
Newfoundland Daylight Time
GMT -2
NST automatically adjusted to NDT time zone, that is in use

Time Difference

Korea Standard Time is 13 hours ahead of Eastern Daylight Time and 11 hours and 30 minutes ahead of Newfoundland Daylight Time
6:30 am06:30 in KST is 5:30 pm17:30 in EDT and is 7:00 pm19:00 in NDT

KST to EST call time
Best time for a conference call or a meeting is between 8pm-10pm in KST which corresponds to 6am-8am in EST
KST to NST call time
Best time for a conference call or a meeting is between 7pm-9pm in KST which corresponds to 6:30am-8:30am in NST

6:30 am06:30 Korea Standard Time (KST). Offset UTC +9:00 hours
5:30 pm17:30 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
7:00 pm19:00 Newfoundland Daylight Time (NDT). Offset UTC -2:30 hours

6:30 am06:30 KST / 5:30 pm17:30 EDT / 7:00 pm19:00 NDT

KST EDT NDT
12am (midnight) 11am 12:30 pm
1am 12pm (noon) 1:30 pm
2am 1pm 2:30 pm
3am 2pm 3:30 pm
4am 3pm 4:30 pm
5am 4pm 5:30 pm
6am 5pm 6:30 pm
7am 6pm 7:30 pm
8am 7pm 8:30 pm
9am 8pm 9:30 pm
10am 9pm 10:30 pm
11am 10pm 11:30 pm
12pm (noon) 11pm 12:30 am
1pm 12am (midnight) 1:30 am
2pm 1am 2:30 am
3pm 2am 3:30 am
4pm 3am 4:30 am
5pm 4am 5:30 am
6pm 5am 6:30 am
7pm 6am 7:30 am
8pm 7am 8:30 am
9pm 8am 9:30 am
10pm 9am 10:30 am
11pm 10am 11:30 am
0:00 11:00 12:30
1:00 12:00 13:30
2:00 13:00 14:30
3:00 14:00 15:30
4:00 15:00 16:30
5:00 16:00 17:30
6:00 17:00 18:30
7:00 18:00 19:30
8:00 19:00 20:30
9:00 20:00 21:30
10:00 21:00 22:30
11:00 22:00 23:30
12:00 23:00 0:30
13:00 0:00 1:30
14:00 1:00 2:30
15:00 2:00 3:30
16:00 3:00 4:30
17:00 4:00 5:30
18:00 5:00 6:30
19:00 6:00 7:30
20:00 7:00 8:30
21:00 8:00 9:30
22:00 9:00 10:30
23:00 10:00 11:30

Korea Standard Time

Offset: KST is 9 hours ahead Greenwich Mean Time (GMT) and is used in Asia

Countries: It is used in following countries: Korea (North), Korea (South)

Principal Cities: The largest city in the KST timezone is Seoul from South Korea with population about 10.349 million people. Other major cities in the area are Busan, Pyongyang, Incheon, Daegu

Daylight Saving: Korea Standard Time (KST) is not adjusted for daylight saving therefore KST remains the same through out the year. This means, unlike some time zones where the clock is set forward by one hour every summer and backward by one hour during winter to adjust for daylight saving, Korea Standard Time remains the same

KST Time Zone Geo Map
KST timezone map

KST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +09 - basic short
  • +0900 - basic
  • +09:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0900 - sign character (+) followed by a four digit time providing hours (09) and minutes (00) of the offset. Indicates nine hour and zero minutes time differences to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • India - Military abbreviation for KST
  • I - short form of 'India'
IANA/Olson: Reflects KST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Pyongyang
  • Asia/Seoul
  • ROK
KST Abbreviation: Several time zones share KST abbreviation and it could refer to these time zones
  • Korea Standard Time - UTC +9
  • Pyongyang Time - UTC +8:30
Time zones with the GMT +9 offset:
  • AWDT - Australian Western Daylight Time
  • CHOST - Choibalsan Summer Time
  • I - India Time Zone
  • IRKST - Irkutsk Summer Time
  • JST - Japan Standard Time
  • KST - Korea Standard Time
  • PWT - Palau Time
  • TLT - East Timor Time
  • ULAST - Ulaanbaatar Summer Time
  • WIT - Eastern Indonesian Time
  • YAKT - Yakutsk Time

Eastern Standard Time

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

Countries: It is used in following countries: Bahamas, Canada, Haiti, Jamaica, Cayman Islands, Mexico, Panama, Turks & Caicos Is, United States

Principal Cities: The largest city in the EST timezone is New York City from USA with population about 8.175 million people. Other major cities in the area are 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, however during summer some places switch clocks for one hour forward when daylight saving comes into effect and observe Eastern Daylight Time (EDT).

Daylight saving time clock moves forward for one hour from 2am to 3amEnd: Eastern Standard Time (EST) has ended on Sunday, March 9, 2025 at 2:00 am local time and clocks were set one hour forward to Sunday, March 9, 2025, 3:00 am local daylight time instead. Standard time ends annually the on second Sunday of March.

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

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 five hour and zero minutes time differences 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

Newfoundland Standard Time

Offset: NST is 3 hours and 30 minutes behind Greenwich Mean Time (GMT) and is used in North America

Countries: It is used in following countries: Canada

Principal Cities: The largest city in the NST timezone is St Johns from Canada with population about 99,182 people. Other major cities in the area are Mount Pearl, Corner Brook, Conception Bay South

French: HNT - Heure Normale de Terre-Neuve

NST Time Zone Geo Map
NST timezone map

Daylight Saving: This is a standard time zone, however during summer some places switch clocks for one hour forward when daylight saving comes into effect and observe Newfoundland Daylight Time (NDT).

Daylight saving time clock moves forward for one hour from 2am to 3amEnd: Newfoundland Standard Time (NST) has ended on Sunday, March 9, 2025 at 2:00 am local time and clocks were set one hour forward to Sunday, March 9, 2025, 3:00 am local daylight time instead. Standard time ends annually the on second Sunday of March.

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

NST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -0330 - basic
  • -03:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0330 - sign character (-) followed by a four digit time providing hours (03) and minutes (30) of the offset. Indicates three hour and thirty minutes time differences to the west of the zero meridian.
IANA/Olson: Reflects NST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/St_Johns
  • Canada/Newfoundland
NST Abbreviation: Several time zones share NST abbreviation and it could refer to these time zones
  • Newfoundland Standard Time - UTC -3
  • Novosibirsk Standard Time - UTC +7
EST to IST GMT to EST PST to EST EST to GMT PST to GMT