City comparison · time difference and converter
Tangier is 4 hours ahead of São Paulo right now. São Paulo sits in Brazil on Sao Paulo; Tangier sits in Morocco on Casablanca. They are roughly 7,870 km apart (4,890 mi), a flight of about 10h 16m. São Paulo's metro holds around 22.6 million people; Tangier's around 1.0 million.
Slot 1
09:00 / 13:00
São Paulo / Tangier
Both inside business hoursSlot 2
10:00 / 14:00
São Paulo / Tangier
Both inside business hoursSlot 3
11:00 / 15:00
São Paulo / Tangier
Both inside business hoursEach row is one hour in São Paulo. 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.
No public holidays in Brazil or Morocco this month.
Great-circle distance
7,870 km
(4,890 mi)
Approximate flight
10h 16m
850 km/h cruise + 1h taxi/climb/descent
Jet lag
4h
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 São Paulo and Tangier is not really a number, it's a daily rhythm. Tangier is 4 hours ahead of São Paulo on the clock today, but the lived version is that Tangier is wrapping up the working day while São Paulo 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 São Paulo, the working day picks up earliest in the financial districts — São Paulo's downtown core wakes early and breaks for lunch at the usual hour. The mood in Tangier is its own story: Tangier 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. Brazil either observes DST or holds a fixed offset year-round; Morocco either follows its region's DST pattern or stays put all year. When the two changes are weeks apart, the offset between São Paulo and Tangier 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 10h 16m 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 4-hour gap costs about 4 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.