City comparison · time difference and converter
Singapore is 2.3 hours ahead of Kathmandu right now. Kathmandu sits in Nepal on Kathmandu; Singapore sits in Singapore on Singapore. They are roughly 3,530 km apart (2,193 mi), a flight of about 5h 09m. Kathmandu's metro holds around 1.4 million people; Singapore's around 5.9 million.
Slot 1
09:00 / 11:00
Kathmandu / Singapore
Both inside business hoursSlot 2
10:00 / 12:00
Kathmandu / Singapore
Both inside business hoursSlot 3
11:00 / 13:00
Kathmandu / Singapore
Both inside business hoursEach row is one hour in Kathmandu. 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 Nepal or Singapore this month.
Great-circle distance
3,530 km
(2,193 mi)
Approximate flight
5h 09m
850 km/h cruise + 1h taxi/climb/descent
Jet lag
2h
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 Kathmandu and Singapore is not really a number, it's a daily rhythm. Singapore is 2.3 hours ahead of Kathmandu on the clock today, but the lived version is that Singapore is wrapping up the working day while Kathmandu 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 Kathmandu, the working day picks up earliest in the financial districts — Kathmandu's downtown core wakes early and breaks for lunch at the usual hour. The mood in Singapore is its own story: Marina Bay glass towers tend to clear out by 19:00, with hawker centres staying busy past 21:00. 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. Nepal either observes DST or holds a fixed offset year-round; Singapore either follows its region's DST pattern or stays put all year. When the two changes are weeks apart, the offset between Kathmandu and Singapore 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 09m 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 2-hour gap costs about 2 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.