City comparison · time difference and converter
Guangzhou vs Seoul time difference and converter
Seoul is 1 hour ahead of Guangzhou right now. Guangzhou sits in China on Shanghai; Seoul sits in South Korea on Seoul. They are roughly 2,073 km apart (1,288 mi), a flight of about 3h 26m. Guangzhou's metro holds around 16.1 million people; Seoul's around 25.7 million.
Guangzhou
Seoul
Best meeting times today
Open converter →Slot 1
09:00 / 10:00
Guangzhou / Seoul
Both inside business hoursSlot 2
10:00 / 11:00
Guangzhou / Seoul
Both inside business hoursSlot 3
11:00 / 12:00
Guangzhou / Seoul
Both inside business hours24-hour comparison heatmap
Each row is one hour in Guangzhou. Green rows are inside business hours in both cities; amber means only one side is at their desk; grey rows fall outside business hours in both.
Public holidays in November 2026
No public holidays in China or South Korea this month.
Travel context
Great-circle distance
2,073 km
(1,288 mi)
Approximate flight
3h 26m
850 km/h cruise + 1h taxi/climb/descent
Jet lag
1h
Roughly 1 day to adjust per timezone crossed
Convert any specific time
The heatmap gives you the shape of the day. If you need to convert one specific hour, say a customer call or a release window, open the converter with both cities already loaded.
Open in converter →Frequently asked questions
Working between Guangzhou and Seoul
The difference between Guangzhou and Seoul is not really a number, it's a daily rhythm. Seoul is 1 hour ahead of Guangzhou on the clock today, but the lived version is that Seoul is wrapping up the working day while Guangzhou is still in the morning, and the overlap people actually use is narrow. That gap, more than the raw offset, is what teams have to design around.
In Guangzhou, the working day picks up earliest in the financial districts- Guangzhou's downtown core wakes early and breaks for lunch at the usual hour. The mood in Seoul is its own story: Seoul settles into the evening at the usual hour, with the local commuter pattern setting the pace. If you are scheduling between the two, the heatmap above marks the rows where both patterns line up.
Daylight saving is the other thing to keep an eye on. China either observes DST or holds a fixed offset year-round; South Korea either follows its region's DST pattern or stays put all year. When the two changes are weeks apart, the offset between Guangzhou and Seoul is one hour off the usual for that stretch, a cliff that catches recurring calendar invites unless your calendar app rebases them automatically. Pin the meeting to a city, not an offset, and the tool handles the rest.
For travellers, the 3h 26m flight is the short version of the story. The longer one is jet lag: roughly one day of adjustment per timezone crossed, which means a trip across the 1-hour gap costs about 1 groggy days on each side. Pilots and cabin crew swear by morning sunlight and an early walk; whatever your routine, the wall-clock numbers above are the source of truth for your first morning in the new city.