City comparison · time difference and converter
Shanghai is 7 hours ahead of Benin City right now. Benin City sits in Nigeria on Lagos; Shanghai sits in China on Shanghai. They are roughly 12,038 km apart (7,480 mi), a flight of about 15h 10m. Benin City's metro holds around 1.8 million people; Shanghai's around 26.3 million.
Slot 1
09:00 / 16:00
Benin City / Shanghai
Both inside business hoursSlot 2
02:00 / 09:00
Benin City / Shanghai
Partial overlapSlot 3
03:00 / 10:00
Benin City / Shanghai
Partial overlapEach row is one hour in Benin City. 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.
Democracy Day
Benin City, Nigeria
Fri, Jun 12
Dragon Boat Festival
Shanghai, China · 端午节
Fri, Jun 19
Great-circle distance
12,038 km
(7,480 mi)
Approximate flight
15h 10m
850 km/h cruise + 1h taxi/climb/descent
Jet lag
7h
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 Benin City and Shanghai is not really a number, it's a daily rhythm. Shanghai is 7 hours ahead of Benin City on the clock today, but the lived version is that Shanghai is wrapping up the working day while Benin City 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 Benin City, the working day picks up earliest in the financial districts — Benin City's downtown core wakes early and breaks for lunch at the usual hour. The mood in Shanghai is its own story: Shanghai 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. Nigeria 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 Benin City and Shanghai 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 15h 10m 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 7-hour gap costs about 7 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.