City comparison · time difference and converter
Zamboanga is 1 hour behind Tokyo right now. Tokyo sits in Japan on Tokyo; Zamboanga sits in Philippines on Manila. They are roughly 3,666 km apart (2,278 mi), a flight of about 5h 19m. Tokyo's metro holds around 37.4 million people; Zamboanga's around 1.0 million.
Slot 1
10:00 / 09:00
Tokyo / Zamboanga
Both inside business hoursSlot 2
11:00 / 10:00
Tokyo / Zamboanga
Both inside business hoursSlot 3
12:00 / 11:00
Tokyo / Zamboanga
Both inside business hoursEach row is one hour in Tokyo. 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.
Independence Day
Zamboanga, Philippines · Araw ng Kalayaan
Fri, Jun 12
Great-circle distance
3,666 km
(2,278 mi)
Approximate flight
5h 19m
850 km/h cruise + 1h taxi/climb/descent
Jet lag
1h
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 Tokyo and Zamboanga is not really a number, it's a daily rhythm. Zamboanga is 1 hour behind Tokyo on the clock today, but the lived version is that Tokyo is ahead in the calendar, so by the time Zamboanga comes online, half of Tokyo's day is already gone. That gap, more than the raw offset, is what teams have to design around.
In Tokyo, the working day picks up earliest in the financial districts — Marunouchi salarymen are in by 08:30 and out around 19:00, often later. The mood in Zamboanga is its own story: Zamboanga 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. Japan either observes DST or holds a fixed offset year-round; Philippines either follows its region's DST pattern or stays put all year. When the two changes are weeks apart, the offset between Tokyo and Zamboanga 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 5h 19m 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 1-hour gap costs about 1 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.