KST to EST to Houston, TX, USA
Time Difference
Korea Standard Time is 14 hours ahead of Eastern Standard Time and 15 hours ahead of CST (Central Standard Time)
5:30 pm17:30 in KST is 3:30 am03:30 in EST and is 2:30 am02:30 in Houston, TX, USA
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 Houston call time
Best time for a conference call or a meeting is between 8:30pm-10:30pm in KST which corresponds to 5:30am-7:30am in Houston
5:30 pm17:30 Korea Standard Time (KST). Offset UTC +9:00 hours
3:30 am03:30 Eastern Standard Time (EST). Offset UTC -5:00 hours
2:30 am02:30 CST (Central Standard Time) (Houston, TX, USA). Offset UTC -6:00 hours
5:30 pm17:30 KST / 3:30 am03:30 EST / 2:30 am02:30 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 |
| 0:00 | 10:00 | 9:00 |
| 1:00 | 11:00 | 10:00 |
| 2:00 | 12:00 | 11:00 |
| 3:00 | 13:00 | 12:00 |
| 4:00 | 14:00 | 13:00 |
| 5:00 | 15:00 | 14:00 |
| 6:00 | 16:00 | 15:00 |
| 7:00 | 17:00 | 16:00 |
| 8:00 | 18:00 | 17:00 |
| 9:00 | 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 | 0:00 | 23:00 |
| 15:00 | 1:00 | 0:00 |
| 16:00 | 2:00 | 1:00 |
| 17:00 | 3:00 | 2:00 |
| 18:00 | 4:00 | 3:00 |
| 19:00 | 5:00 | 4:00 |
| 20:00 | 6:00 | 5:00 |
| 21:00 | 7:00 | 6:00 |
| 22:00 | 8:00 | 7:00 |
| 23:00 | 9:00 | 8:00 |
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 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 nine hour and zero minutes time differences 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: 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
Daylight Saving: This is a standard timezone, however during summer some places switch clocks for one hour forward when daylight saving comes into effect 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 the on 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 starts annually the on 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 five hour and zero minutes time differences 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
CDT - Central Daylight Time
-5:00 hours during Central Daylight Time.
Sunday, March 9, 2025 at 2:00 am local time. DST starts annually the on second Sunday of March. Clocks are turned forward 1 hour to Sunday, March 9, 2025, 3:00 am local daylight time instead. Also called Spring Forward or Summer Time.
Sunday, November 2, 2025 at 2:00 am local time. DST ends annually the on first Sunday of November. Clocks are turned backward 1 hour to Sunday, November 2, 2025, 1:00 am local standard time instead. Also called Fall Back or switch to Winter Time.