City comparison · time difference and converter
Port Harcourt is 5 hours ahead of New York right now. New York sits in United States on New York; Port Harcourt sits in Nigeria on Lagos. They are roughly 8,905 km apart (5,533 mi), a flight of about 11h 29m. New York's metro holds around 19.5 million people; Port Harcourt's around 2.1 million.
Slot 1
09:00 / 14:00
New York / Port Harcourt
Both inside business hoursSlot 2
10:00 / 15:00
New York / Port Harcourt
Both inside business hoursSlot 3
11:00 / 16:00
New York / Port Harcourt
Both inside business hoursEach row is one hour in New York. 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
Port Harcourt, Nigeria
Fri, Jun 12
Juneteenth
New York, United States
Fri, Jun 19
Great-circle distance
8,905 km
(5,533 mi)
Approximate flight
11h 29m
850 km/h cruise + 1h taxi/climb/descent
Jet lag
5h
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 New York and Port Harcourt is not really a number, it's a daily rhythm. Port Harcourt is 5 hours ahead of New York on the clock today, but the lived version is that Port Harcourt is wrapping up the working day while New York 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 New York, the working day picks up earliest in the financial districts — Lower Manhattan trading floors hum from 06:30 ahead of the cash open. The mood in Port Harcourt is its own story: Port Harcourt 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. United States shifts the clock on the second Sunday of March and the first Sunday of November; Nigeria either follows its region's DST pattern or stays put all year. When the two changes are weeks apart, the offset between New York and Port Harcourt 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 11h 29m 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 5-hour gap costs about 5 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.