Osaka to Kathmandu
-3h 15mOsaka
JSTSOURCEKathmandu
NPTGreen rows indicate typical business hours (9 AM - 5 PM)
JST and NPT on the World Map
The map below highlights the JST (Japan Standard Time) and NPT (Nepal Time) timezone regions across the globe.
JST – Japan Standard Time
UTC+09:00Japan Standard Time (JST) is the time zone for Japan, 9 hours ahead of UTC.
- •Japan does not observe daylight saving time.
- •Tokyo is the most populous metropolitan area in the world.
- •The Tokyo Stock Exchange operates from 9:00 AM to 3:00 PM JST.
- •JST is 14 hours ahead of EST and 9 hours ahead of GMT.
NPT – Nepal Time
UTC+05:45Nepal Time (NPT, UTC+05:45) is the time zone for Nepal — one of the few offsets in the world set on a 45-minute increment.
- •Nepal Time is UTC+05:45 — a 45-minute offset, not a whole or half hour.
- •The 45-minute offset was adopted in 1986 to match Kathmandu's solar time.
- •Nepal does not observe daylight saving time.
- •Nepal is 15 minutes ahead of India, despite sharing a long open border.
About Osaka
WikipediaOsaka operates on Japan Standard Time (JST), UTC+9. As Japan's second economic center and a manufacturing hub, Osaka shares business hours with Tokyo.
Osaka Castle was originally built in 1583 and has been rebuilt several times.
About Kathmandu
WikipediaKathmandu operates on Nepal Time (NPT), one of the world's unique UTC+5:45 timezones. This 15-minute offset from India makes Nepal time distinctive for global coordination.
Nepal Time (NPT) is one of only three timezones offset by 45 minutes (UTC+5:45).
Understanding the -3h 15m Gap: Osaka vs Kathmandu
Osaka runs on Japan Standard Time (JST) at UTC+09:00. Kathmandu runs on Nepal Time (NPT) at UTC+05:45. That puts Osaka 3 hours 15 minutes behind Kathmandu — a difference of -3h 15m at the current offsets.
In practice, when it is 9:00 AM in Osaka it is 5:45 AM in Kathmandu. Midnight in Osaka is 8:45 PM in Kathmandu. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Osaka to Kathmandu time conversion table
| Osaka (JST) | Kathmandu (NPT) | Day |
|---|---|---|
| 12:00 AM | 8:45 PM | previous day |
| 6:00 AM | 2:45 AM | same day |
| 7:00 AM | 3:45 AM | same day |
| 8:00 AM | 4:45 AM | same day |
| 9:00 AM | 5:45 AM | same day |
| 12:00 PM | 8:45 AM | same day |
| 3:00 PM | 11:45 AM | same day |
| 5:00 PM | 1:45 PM | same day |
| 6:00 PM | 2:45 PM | same day |
| 9:00 PM | 5:45 PM | same day |
Why people convert Osaka to Kathmandu time
- Scheduling a call from Osaka to Kathmandu: a 10:00 AM start in Osaka lands at 6:45 AM in Kathmandu, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Osaka and Kathmandu are inside the 9-to-5 working day between 12:15 PM and 5:00 PM JST time (9:00 AM–1:45 PM NPT). That is roughly 4 hours 45 minutes of usable overlap.
- Booking travel or deliveries: tracking Kathmandu local time against Osaka keeps pickup windows and arrival estimates honest across the -3h 15m offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM JST" is unambiguous; "3 PM" across a -3h 15m gap is not.
- Block 12:15 PM–5:00 PM JST as the recurring meeting window if you work primarily from Osaka and need Kathmandu colleagues present.
About JST (Japan Standard Time)
Japan Standard Time (JST) is the standard time zone for all of Japan. Japan does not observe daylight saving time. JST is 9 hours ahead of UTC and 14 hours ahead of EST. The Tokyo Stock Exchange, the world's third largest by market capitalization, operates on JST. South Korea uses the same offset (KST) but it is a distinct time zone.
About NPT (Nepal Time)
Nepal Time (NPT) runs at UTC+05:45, one of only a handful of time zones worldwide that are not a whole or half hour from UTC. Nepal set its offset to 5 hours 45 minutes ahead of UTC in 1986 to mark the country's position between the 75°E and 90°E meridians; Kathmandu's solar time sits just over 5 hours 41 minutes ahead of Greenwich, so the 45-minute offset tracks the sun more closely than either 5:30 or 6:00 would. Nepal does not observe daylight saving time, so NPT is fixed all year. The offset makes Nepal 15 minutes ahead of India Standard Time (UTC+05:30) and 2 hours 15 minutes ahead of Dubai (UTC+04:00).
Best time to call between Osaka and Kathmandu
Both Osaka and Kathmandu sit inside the 9 AM – 5 PM working day between 12:15 PM–5:00 PM JST, which is 9:00 AM–1:45 PM NPT. That gives roughly 4 hours and 45 minutes of shared time — the safest window for a live call or meeting.
Business hours overlap
Osaka and Kathmandu overlap for about 4 hours during the working day — enough for meetings if you avoid the edges of the window.
Osaka is 3 hours 15 minutes behind Kathmandu (JST UTC+09:00 → NPT UTC+05:45). The shared working window is 12:15 PM–5:00 PM JST. Remember to re-check around daylight-saving transitions.
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between Osaka and Kathmandu?
Osaka (JST, UTC+09:00) is 3 hours 15 minutes behind Kathmandu (NPT, UTC+05:45). The gap is currently -3h 15m.
How do I convert Osaka time to Kathmandu time?
Add -3h 15m to Osaka local time. For example, 9:00 AM in Osaka is 5:45 AM in Kathmandu.
What time is it in Kathmandu right now?
Kathmandu uses NPT at UTC+05:45. Use the live converter at the top of this page — it updates in real time and already accounts for the -3h 15m offset from Osaka.
What is the best time to call Kathmandu from Osaka?
Call between 12:15 PM and 5:00 PM JST — that maps to 9:00 AM–1:45 PM NPT and keeps both parties inside the working day.
Which is behind, Osaka or Kathmandu?
Osaka is 3 hours 15 minutes behind Kathmandu. When it is 12:00 PM in Osaka it is 8:45 AM in Kathmandu.
Do Osaka and Kathmandu use different time zones?
Osaka (Japan) uses JST at UTC+09:00, while Kathmandu (Nepal) uses NPT at UTC+05:45. The IANA identifiers are Asia/Tokyo and Asia/Kathmandu.
Does daylight saving time affect the Osaka–Kathmandu difference?
Neither zone observes daylight saving time, so the -3h 15m offset between Osaka and Kathmandu is fixed all year.
Which other cities share Osaka's time zone?
JST also covers Tokyo, Osaka, Yokohama, Nagoya, Sapporo, Kyoto, Kobe, Fukuoka and 1 more.
Which countries use JST, Osaka's zone?
JST is used in Japan.
Is there a day difference between Osaka and Kathmandu?
Not normally. The -3h 15m gap only pushes the date over the previous day.
What is the time difference between Osaka and Kathmandu?
Kathmandu is -3h 15m from Osaka.
What timezone is Osaka in?
Osaka operates on Japan Standard Time (JST), UTC+9. As Japan's second economic center and a manufacturing hub, Osaka shares business hours with Tokyo.
What timezone is Kathmandu in?
Kathmandu operates on Nepal Time (NPT), one of the world's unique UTC+5:45 timezones. This 15-minute offset from India makes Nepal time distinctive for global coordination.
What are the business hours in Osaka?
Standard business hours in Osaka are 9:00 AM - 6:00 PM JST.
What are the business hours in Kathmandu?
Standard business hours in Kathmandu are 10:00 AM - 5:00 PM NPT.
What is the best time to schedule a call between Osaka and Kathmandu?
The best overlap for a call is when both cities are in business hours. Osaka works 9:00 AM - 6:00 PM JST and Kathmandu works 10:00 AM - 5:00 PM NPT (-3h 15m difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Osaka and Kathmandu?
Osaka uses JPY (¥) while Kathmandu uses NPR (रू). Check current exchange rates when planning travel or business between these cities.
How do Osaka and Kathmandu compare in size?
Osaka has a population of approximately 2.8 million (metro: 19 million), while Kathmandu has approximately 1.4 million (metro: 3.0 million).
What are the major landmarks in Osaka and Kathmandu?
Osaka is known for Osaka Castle, Dotonbori, Universal Studios Japan. Kathmandu is famous for Boudhanath Stupa, Swayambhunath, Durbar Square.
Do Osaka and Kathmandu have stock exchanges?
Yes. Osaka has the OSE (Osaka Exchange - derivatives) and Kathmandu has the NEPSE (Nepal Stock Exchange). The -3h 15m time difference affects trading hour overlaps between these exchanges.
Which countries use JST (Japan Standard Time)?
JST is used in Japan.
Does JST observe daylight saving time?
No, JST does not observe daylight saving time and remains at UTC+09:00 year-round.
What are some interesting facts about JST?
Japan does not observe daylight saving time. Tokyo is the most populous metropolitan area in the world.
Which cities are in the NPT timezone?
Major cities in the NPT timezone include Kathmandu, Pokhara, Lalitpur, Bharatpur, Biratnagar.
What is the UTC offset for NPT?
Nepal Time (NPT) is at UTC+05:45.
What should I know about the NPT timezone?
Nepal Time is UTC+05:45 — a 45-minute offset, not a whole or half hour. The 45-minute offset was adopted in 1986 to match Kathmandu's solar time.
When is it midnight in Osaka, what time is it in Kathmandu?
When it is 12:00 AM (midnight) in Osaka (JST), it is -3h 15m later in Kathmandu (NPT).
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