Offset
The time difference between Sofia and Seoul is 6 hours.
Sofia (EEST) is behind Seoul (KST).
EEST: UTC+3
KST: UTC+9
Sofia is currently observing daylight saving time; Seoul is not.
When to schedule
Business-hours overlap: 9 AM–11 AM in Sofia (3 PM–5 PM in Seoul).
Both teams are in working hours during this window on weekdays.
Suggested time: 10:00 AM Sofia (4:00 PM Seoul).
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.
Bulgaria
- New Year's DayThu, Jan 1
- Currency change dayFri, Jan 2
- Liberation DayTue, Mar 3
- Good FridayFri, Apr 10
- Holy SaturdaySat, Apr 11
- Easter SundaySun, Apr 12
- Easter MondayMon, Apr 13
- International Workers' DayFri, May 1
- Saint George's DayWed, May 6
- Saints Cyril and Methodius DayMon, May 25
- Unification DayMon, Sep 7
- Independence DayTue, Sep 22
- Christmas EveThu, Dec 24
- Christmas DayFri, Dec 25
- Second day of ChristmasSat, Dec 26
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
About these zones
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Sofia | Seoul | Day |
|---|---|---|
| 12:00 am | 6:00 am | Same day |
| 1:00 am | 7:00 am | Same day |
| 2:00 am | 8:00 am | Same day |
| 3:00 am | 9:00 am | Same day |
| 4:00 am | 10:00 am | Same day |
| 5:00 am | 11:00 am | Same day |
| 6:00 am | 12:00 pm | Same day |
| 7:00 am | 1:00 pm | Same day |
| 8:00 am | 2:00 pm | Same day |
| 9:00 am | 3:00 pm | Same day |
| 10:00 am | 4:00 pm | Same day |
| 11:00 am | 5:00 pm | Same day |
| 12:00 pm | 6:00 pm | Same day |
| 1:00 pm | 7:00 pm | Same day |
| 2:00 pm | 8:00 pm | Same day |
| 3:00 pm | 9:00 pm | Same day |
| 4:00 pm | 10:00 pm | Same day |
| 5:00 pm | 11:00 pm | Same day |
| 6:00 pm | 12:00 am | +1 day |
| 7:00 pm | 1:00 am | +1 day |
| 8:00 pm | 2:00 am | +1 day |
| 9:00 pm | 3:00 am | +1 day |
| 10:00 pm | 4:00 am | +1 day |
| 11:00 pm | 5:00 am | +1 day |
Daylight saving time
Sofia observes daylight saving time; Seoul does not. The offset between the two zones changes when Sofia transitions: on Sunday, October 25, 2026, clocks fall back from EEST to EET.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:50 AM
- Sunset
- 9:03 PM
- Day length
- 15h 14m
- Sunrise
- 5:12 AM
- Sunset
- 7:52 PM
- Day length
- 14h 41m
Daylight overlap: 8h 2m — 5:50 AM–1:52 PM in Sofia (11:50 AM–7:52 PM in Seoul). Both locations are in daylight during this window.
Cities in these zones
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Eastern European Time
- SOF
Airports in Korea Standard Time
- GMP
- ICN
- PUS
- TAE
- CJJ
- KWJ
- MWX
Related conversions
Common conversions
- What is 9:00 am Sofia in Seoul?
- 9:00 am Sofia is 3:00 pm Seoul.
- What is 12:00 pm Sofia in Seoul?
- 12:00 pm Sofia is 6:00 pm Seoul.
- What is 12:30 pm Sofia in Seoul?
- 12:30 pm Sofia is 6:30 pm Seoul.
- What is 2:00 pm Sofia in Seoul?
- 2:00 pm Sofia is 8:00 pm Seoul.
- What is 5:00 pm Sofia in Seoul?
- 5:00 pm Sofia is 11:00 pm Seoul.
- What is 11:30 pm Sofia in Seoul?
- 11:30 pm Sofia is 5:30 am Seoul, the next day.