Kathmandu to JST
+3h 15mKathmandu
NPTSOURCEJST
JSTGreen rows indicate typical business hours (9 AM - 5 PM)
NPT and JST on the World Map
The map below highlights the NPT (Nepal Time) and JST (Japan Standard Time) timezone regions across the globe.
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.
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.
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).
Kathmandu vs JST: Offsets, DST and Best Call Times
Kathmandu runs on Nepal Time (NPT) at UTC+05:45. JST runs on Japan Standard Time (JST) at UTC+09:00. That puts Kathmandu 3 hours 15 minutes ahead of JST — a difference of +3h 15m at the current offsets.
In practice, when it is 9:00 AM in Kathmandu it is 12:15 PM in JST. Midnight in Kathmandu is 3:15 AM in JST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Kathmandu to JST time conversion table
| Kathmandu (NPT) | JST (JST) | Day |
|---|---|---|
| 12:00 AM | 3:15 AM | same day |
| 6:00 AM | 9:15 AM | same day |
| 7:00 AM | 10:15 AM | same day |
| 8:00 AM | 11:15 AM | same day |
| 9:00 AM | 12:15 PM | same day |
| 12:00 PM | 3:15 PM | same day |
| 3:00 PM | 6:15 PM | same day |
| 5:00 PM | 8:15 PM | same day |
| 6:00 PM | 9:15 PM | same day |
| 9:00 PM | 12:15 AM | next day |
Why people convert Kathmandu to JST time
- Scheduling a call from Kathmandu to JST: a 10:00 AM start in Kathmandu lands at 1:15 PM in JST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Kathmandu and JST are inside the 9-to-5 working day between 9:00 AM and 1:45 PM NPT time (12:15 PM–5:00 PM JST). That is roughly 4 hours 45 minutes of usable overlap.
- Watching a live event or market open: Kathmandu viewers need 12:15 PM in JST to catch a 9:00 AM start there, and 8:45 PM if the event is anchored to Kathmandu.
- Always state the zone abbreviation, not just the hour. "3:00 PM NPT" is unambiguous; "3 PM" across a +3h 15m gap is not.
- Block 9:00 AM–1:45 PM NPT as the recurring meeting window if you work primarily from Kathmandu and need JST colleagues present.
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).
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.
Best time to call between Kathmandu and JST
Both Kathmandu and JST sit inside the 9 AM – 5 PM working day between 9:00 AM–1:45 PM NPT, which is 12:15 PM–5:00 PM JST. That gives roughly 4 hours and 45 minutes of shared time — the safest window for a live call or meeting.
Business hours overlap
Kathmandu and JST overlap for about 4 hours during the working day — enough for meetings if you avoid the edges of the window.
Kathmandu is 3 hours 15 minutes ahead of JST (NPT UTC+05:45 → JST UTC+09:00). The shared working window is 9:00 AM–1:45 PM NPT. 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 Kathmandu and JST?
Kathmandu (NPT, UTC+05:45) is 3 hours 15 minutes ahead of JST (JST, UTC+09:00). The gap is currently +3h 15m.
How do I convert Kathmandu time to JST time?
Add +3h 15m to Kathmandu local time. For example, 9:00 AM in Kathmandu is 12:15 PM in JST.
What time is it in JST right now?
JST uses JST at UTC+09:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +3h 15m offset from Kathmandu.
What is the best time to call JST from Kathmandu?
Call between 9:00 AM and 1:45 PM NPT — that maps to 12:15 PM–5:00 PM JST and keeps both parties inside the working day.
Which is ahead, Kathmandu or JST?
Kathmandu is 3 hours 15 minutes ahead of JST. When it is 12:00 PM in Kathmandu it is 3:15 PM in JST.
Do Kathmandu and JST use different time zones?
Kathmandu (Nepal) uses NPT at UTC+05:45, while JST uses JST at UTC+09:00. The IANA identifiers are Asia/Kathmandu and Asia/Tokyo.
Does daylight saving time affect the Kathmandu–JST difference?
Neither zone observes daylight saving time, so the +3h 15m offset between Kathmandu and JST is fixed all year.
Which other cities share Kathmandu's time zone?
NPT also covers Kathmandu, Pokhara, Lalitpur, Bharatpur, Biratnagar.
Which countries use NPT, Kathmandu's zone?
NPT is used in Nepal.
Is there a day difference between Kathmandu and JST?
Not normally. The +3h 15m gap only pushes the date over for late-evening times.
What is the time difference between Kathmandu and JST?
JST is +3h 15m from Kathmandu.
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 timezone is JST in?
JST operates on its local timezone.
What are the business hours in Kathmandu?
Standard business hours in Kathmandu are 10:00 AM - 5:00 PM NPT.
Which countries use NPT (Nepal Time)?
NPT is used in Nepal.
Does NPT observe daylight saving time?
No, NPT does not observe daylight saving time and remains at UTC+05:45 year-round.
What are some interesting facts about NPT?
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.
Which cities are in the JST timezone?
Major cities in the JST timezone include Tokyo, Osaka, Yokohama, Nagoya, Sapporo, Kyoto, Kobe, Fukuoka.
What is the UTC offset for JST?
Japan Standard Time (JST) is at UTC+09:00.
What should I know about the JST timezone?
Japan does not observe daylight saving time. Tokyo is the most populous metropolitan area in the world.
When is it midnight in Kathmandu, what time is it in JST?
When it is 12:00 AM (midnight) in Kathmandu (NPT), it is +3h 15m later in JST (JST).
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