City comparison · time difference and converter
Shenzhen and Shanghai share the same wall clock right now right now. Shanghai sits in China on Shanghai; Shenzhen sits in China on Shanghai. They are roughly 1,213 km apart (754 mi), a flight of about 2h 26m. Shanghai's metro holds around 26.3 million people; Shenzhen's around 17.6 million.
Slot 1
09:00 / 09:00
Shanghai / Shenzhen
Both inside business hoursSlot 2
10:00 / 10:00
Shanghai / Shenzhen
Both inside business hoursSlot 3
11:00 / 11:00
Shanghai / Shenzhen
Both inside business hoursEach row is one hour in Shanghai. 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.
Dragon Boat Festival
China · 端午节
Fri, Jun 19
Great-circle distance
1,213 km
(754 mi)
Approximate flight
2h 26m
850 km/h cruise + 1h taxi/climb/descent
Jet lag
0h
Roughly 1 day to adjust per timezone crossed
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 →The difference between Shanghai and Shenzhen is not really a number, it's a daily rhythm. Shenzhen and Shanghai share the same wall clock right now on the clock today, but the lived version is that the two cities share the same clock, so any meeting time that works for one works for the other. That gap, more than the raw offset, is what teams have to design around.
In Shanghai, the working day picks up earliest in the financial districts — Shanghai's downtown core wakes early and breaks for lunch at the usual hour. The mood in Shenzhen is its own story: Shenzhen 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; China either follows its region's DST pattern or stays put all year. When the two changes are weeks apart, the offset between Shanghai and Shenzhen 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 2h 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 0-hour gap costs about 0 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.