Offset
The time difference between Gwangju and Eastern Time is 13 hours.
Gwangju (KST) is ahead of Eastern Time (EDT).
KST: UTC+9
EDT: UTC-4
Eastern Time is currently observing daylight saving time; Gwangju is not.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Gwangju and Eastern Time don't overlap on the same weekday. Eastern Time is 13 hours behind Gwangju.
Realistic options: hand off asynchronously, or stretch one side by an hour to catch the other team at the start or end of their day.
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
South Korea
- New Year's DayThu, Jan 1
- Lunar New YearMon, Feb 16
- Lunar New YearTue, Feb 17
- Lunar New YearWed, Feb 18
- Independence Movement DayMon, Mar 2
- Labour DayFri, May 1
- Children's DayTue, May 5
- Buddha's BirthdayMon, May 25
- Local Election DayWed, Jun 3
- Memorial DaySat, Jun 6
- Constitution DayFri, Jul 17
- Liberation DayMon, Aug 17
- ChuseokThu, Sep 24
- ChuseokFri, Sep 25
- ChuseokSat, Sep 26
- National Foundation DayMon, Oct 5
- Hangul DayFri, Oct 9
- Christmas DayFri, Dec 25
United States
- New Year's DayThu, Jan 1
- Martin Luther King, Jr. DayMon, Jan 19
- Presidents DayMon, Feb 16
- Memorial DayMon, May 25
- Juneteenth National Independence DayFri, Jun 19
- Independence DayFri, Jul 3
- Labour DayMon, Sep 7
- Columbus DayMon, Oct 12
- Veterans DayWed, Nov 11
- Thanksgiving DayThu, Nov 26
- Christmas DayFri, Dec 25
About these zones
Gwangju uses Korea Standard Time (KST). To call South Korea, dial +82.
Eastern Time is also known as EST, or EDT. To call United States, dial +1.
Eastern Time is approximately 7,050 miles north of Gwangju.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Gwangju | EST | Day |
|---|---|---|
| 12:00 am | 11:00 am | -1 day |
| 1:00 am | 12:00 pm | -1 day |
| 2:00 am | 1:00 pm | -1 day |
| 3:00 am | 2:00 pm | -1 day |
| 4:00 am | 3:00 pm | -1 day |
| 5:00 am | 4:00 pm | -1 day |
| 6:00 am | 5:00 pm | -1 day |
| 7:00 am | 6:00 pm | -1 day |
| 8:00 am | 7:00 pm | -1 day |
| 9:00 am | 8:00 pm | -1 day |
| 10:00 am | 9:00 pm | -1 day |
| 11:00 am | 10:00 pm | -1 day |
| 12:00 pm | 11:00 pm | -1 day |
| 1:00 pm | 12:00 am | Same day |
| 2:00 pm | 1:00 am | Same day |
| 3:00 pm | 2:00 am | Same day |
| 4:00 pm | 3:00 am | Same day |
| 5:00 pm | 4:00 am | Same day |
| 6:00 pm | 5:00 am | Same day |
| 7:00 pm | 6:00 am | Same day |
| 8:00 pm | 7:00 am | Same day |
| 9:00 pm | 8:00 am | Same day |
| 10:00 pm | 9:00 am | Same day |
| 11:00 pm | 10:00 am | Same day |
Daylight saving time
Eastern Time observes daylight saving time; Gwangju does not. The offset between the two zones changes when Eastern Time transitions: on Sunday, November 1, 2026, clocks fall back from EDT to EST.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:34 AM
- Sunset
- 7:45 PM
- Day length
- 14h 12m
- Sunrise
- 5:43 AM
- Sunset
- 8:23 PM
- Day length
- 14h 40m
Daylight overlap: 1h 2m — 6:43 PM–7:45 PM in Gwangju (5:43 AM–6:45 AM in Eastern Time). Both locations are in daylight during this window.
Cities in these zones
Cities in Eastern Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Korea Standard Time
- GMP
- ICN
- PUS
- TAE
- CJJ
- KWJ
- MWX
Airports in Eastern Time
- EWR
- HPN
- JFK
- LGA
- TEB
- ILG
- PHL
- TTN
- CLT
- USA
Related conversions
Common conversions
- What is 9:00 am Gwangju in EST?
- 9:00 am Gwangju is 8:00 pm EST, the previous day.
- What is 12:00 pm Gwangju in EST?
- 12:00 pm Gwangju is 11:00 pm EST, the previous day.
- What is 12:30 pm Gwangju in EST?
- 12:30 pm Gwangju is 11:30 pm EST, the previous day.
- What is 2:00 pm Gwangju in EST?
- 2:00 pm Gwangju is 1:00 am EST.
- What is 5:00 pm Gwangju in EST?
- 5:00 pm Gwangju is 4:00 am EST.
- What is 11:30 pm Gwangju in EST?
- 11:30 pm Gwangju is 10:30 am EST.