KST to EST to Houston, TX, USA
Compare KST time with EST and Houston time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Korea Standard Time is 14 hours ahead of Eastern Standard Time and 15 hours ahead of CST (Central Standard Time)
9:00 pm21:00 in KST is 7:00 am07:00 in EST and is 6:00 am06:00 in Houston, TX, USA
KST to EST call time
Best time for a conference call or a meeting is between 7:30am-8:30am in KST which corresponds to 5:30pm-6:30pm in EST (previous day)
KST to Houston call time
Best time for a conference call or a meeting is between 8am-9am in KST which corresponds to 5pm-6pm in Houston (previous day)
9:00 pm21:00 Korea Standard Time (KST). Offset UTC +9:00 hours
7:00 am07:00 Eastern Standard Time (EST). Offset UTC -5:00 hours
6:00 am06:00 CST (Central Standard Time) (Houston, TX, USA). Offset UTC -6:00 hours
9:00 pm21:00 KST / 7:00 am07:00 EST / 6:00 am06:00 Houston, TX, USA
| KST | EST | Houston, TX, USA |
|---|---|---|
| 12am (midnight) | 10am | 9am |
| 1am | 11am | 10am |
| 2am | 12pm (noon) | 11am |
| 3am | 1pm | 12pm (noon) |
| 4am | 2pm | 1pm |
| 5am | 3pm | 2pm |
| 6am | 4pm | 3pm |
| 7am | 5pm | 4pm |
| 8am | 6pm | 5pm |
| 9am | 7pm | 6pm |
| 10am | 8pm | 7pm |
| 11am | 9pm | 8pm |
| 12pm (noon) | 10pm | 9pm |
| 1pm | 11pm | 10pm |
| 2pm | 12am (midnight) | 11pm |
| 3pm | 1am | 12am (midnight) |
| 4pm | 2am | 1am |
| 5pm | 3am | 2am |
| 6pm | 4am | 3am |
| 7pm | 5am | 4am |
| 8pm | 6am | 5am |
| 9pm | 7am | 6am |
| 10pm | 8am | 7am |
| 11pm | 9am | 8am |
| 00:00 | 10:00 | 09:00 |
| 01:00 | 11:00 | 10:00 |
| 02:00 | 12:00 | 11:00 |
| 03:00 | 13:00 | 12:00 |
| 04:00 | 14:00 | 13:00 |
| 05:00 | 15:00 | 14:00 |
| 06:00 | 16:00 | 15:00 |
| 07:00 | 17:00 | 16:00 |
| 08:00 | 18:00 | 17:00 |
| 09:00 | 19:00 | 18:00 |
| 10:00 | 20:00 | 19:00 |
| 11:00 | 21:00 | 20:00 |
| 12:00 | 22:00 | 21:00 |
| 13:00 | 23:00 | 22:00 |
| 14:00 | 00:00 | 23:00 |
| 15:00 | 01:00 | 00:00 |
| 16:00 | 02:00 | 01:00 |
| 17:00 | 03:00 | 02:00 |
| 18:00 | 04:00 | 03:00 |
| 19:00 | 05:00 | 04:00 |
| 20:00 | 06:00 | 05:00 |
| 21:00 | 07:00 | 06:00 |
| 22:00 | 08:00 | 07:00 |
| 23:00 | 09:00 | 08:00 |
Korea Standard Time
Offset: KST is 9 hours ahead Greenwich Mean Time (GMT) and is used in Asia
Countries using this time zone: Korea (North), Korea (South)
Principal Cities: The largest city in the KST time zone is Seoul in South Korea, with about 10.349 million people. Other major cities in this time zone include Busan, Pyongyang, Incheon, Daegu.
Daylight Saving: Clocks in Korea Standard Time (KST) do not change for daylight saving time, so KST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter.
KST representations, usage and related time zones
- +09 - basic short
- +0900 - basic
- +09:00 - extended
- +0900 - sign character (+) followed by a four digit time providing hours (09) and minutes (00) of the offset. Indicates an offset of nine hours to the east of the zero meridian.
- India - Military abbreviation for KST
- I - short form of 'India'
- Asia/Pyongyang
- Asia/Seoul
- ROK
- Korea Standard Time - UTC +9
- Pyongyang Time - UTC +8:30
- 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 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
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).
Start: 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.
End: 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
- -05 - basic short
- -0500 - basic
- -05:00 - extended
- -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.
- Romeo - Military abbreviation for EST
- R - short form of 'Romeo'
- 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
- 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
Houston Information
Time Zone
CST - Central Standard Time
-6:00 hours during Central Standard Time.
Sunday, March 8, 2026 at 2:00 am local time. DST starts annually on the 2nd Sunday of March. Clocks are turned forward 1 hour to Sunday, March 8, 2026 at 3:00 am local daylight time instead. Also called Spring Forward or Summer Time.Sunday, November 1, 2026 at 2:00 am local time. DST ends annually on the 1st Sunday of November. Clocks are turned backward 1 hour to Sunday, November 1, 2026 at 1:00 am local standard time instead. Also called Fall Back or switch to Winter Time.