City comparison · time difference and converter
Port Harcourt is 6 hours behind Jakarta right now. Jakarta sits in Indonesia on Jakarta; Port Harcourt sits in Nigeria on Lagos. They are roughly 11,149 km apart (6,928 mi), a flight of about 14h 07m. Jakarta's metro holds around 35.4 million people; Port Harcourt's around 2.1 million.
Slot 1
15:00 / 09:00
Jakarta / Port Harcourt
Both inside business hoursSlot 2
16:00 / 10:00
Jakarta / Port Harcourt
Both inside business hoursSlot 3
09:00 / 03:00
Jakarta / Port Harcourt
Partial overlapEach row is one hour in Jakarta. 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.
Pancasila Day
Jakarta, Indonesia · Hari Lahir Pancasila
Mon, Jun 1
Democracy Day
Port Harcourt, Nigeria
Fri, Jun 12
Great-circle distance
11,149 km
(6,928 mi)
Approximate flight
14h 07m
850 km/h cruise + 1h taxi/climb/descent
Jet lag
6h
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 Jakarta and Port Harcourt is not really a number, it's a daily rhythm. Port Harcourt is 6 hours behind Jakarta on the clock today, but the lived version is that Jakarta is ahead in the calendar, so by the time Port Harcourt comes online, half of Jakarta's day is already gone. That gap, more than the raw offset, is what teams have to design around.
In Jakarta, the working day picks up earliest in the financial districts — Jakarta's downtown core wakes early and breaks for lunch at the usual hour. 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. Indonesia either observes DST or holds a fixed offset year-round; Nigeria either follows its region's DST pattern or stays put all year. When the two changes are weeks apart, the offset between Jakarta 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 14h 07m 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 6-hour gap costs about 6 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.