Kathmandu to Istanbul
-2h 45mKathmandu
NPTSOURCEIstanbul
TRTGreen rows indicate typical business hours (9 AM - 5 PM)
NPT and TRT on the World Map
The map below highlights the NPT (Nepal Time) and TRT (Turkey 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.
TRT – Turkey Time
UTC+03:00Turkey Time (TRT, UTC+03:00) is the single time zone used across Turkey, fixed year round since 2016.
- •Turkey has used a permanent UTC+03:00 since September 2016.
- •TRT is level with Moscow Standard Time and Arabia Standard Time all year.
- •Because Turkey kept summer time permanently, western cities see very late winter sunrises.
- •Turkey previously observed daylight saving time from 1973 to 2016.
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).
About Istanbul
WikipediaIstanbul operates on Turkey Time (TRT), UTC+3 year-round. As a transcontinental city, Istanbul bridges European and Asian business hours.
The Grand Bazaar is one of the world's oldest and largest covered markets with 4,000+ shops.
Comparing Time Zones: Kathmandu and Istanbul
Kathmandu runs on Nepal Time (NPT) at UTC+05:45. Istanbul runs on Türkiye Standard Time (TRT) at UTC+03:00. That puts Kathmandu 2 hours 45 minutes behind Istanbul — a difference of -2h 45m at the current offsets.
In practice, when it is 9:00 AM in Kathmandu it is 6:15 AM in Istanbul. Midnight in Kathmandu is 9:15 PM in Istanbul. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Kathmandu to Istanbul time conversion table
| Kathmandu (NPT) | Istanbul (TRT) | Day |
|---|---|---|
| 12:00 AM | 9:15 PM | previous day |
| 6:00 AM | 3:15 AM | same day |
| 7:00 AM | 4:15 AM | same day |
| 8:00 AM | 5:15 AM | same day |
| 9:00 AM | 6:15 AM | same day |
| 12:00 PM | 9:15 AM | same day |
| 3:00 PM | 12:15 PM | same day |
| 5:00 PM | 2:15 PM | same day |
| 6:00 PM | 3:15 PM | same day |
| 9:00 PM | 6:15 PM | same day |
Why people convert Kathmandu to Istanbul time
- Scheduling a call from Kathmandu to Istanbul: a 10:00 AM start in Kathmandu lands at 7:15 AM in Istanbul, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Kathmandu and Istanbul are inside the 9-to-5 working day between 11:45 AM and 5:00 PM NPT time (9:00 AM–2:15 PM TRT). That is roughly 5 hours 15 minutes of usable overlap.
- Booking travel or deliveries: tracking Istanbul local time against Kathmandu keeps pickup windows and arrival estimates honest across the -2h 45m offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM NPT" is unambiguous; "3 PM" across a -2h 45m gap is not.
- Block 11:45 AM–5:00 PM NPT as the recurring meeting window if you work primarily from Kathmandu and need Istanbul 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 TRT (Turkey Time)
Turkey Time (TRT) is fixed at UTC+03:00 all year. Turkey abolished seasonal clock changes in September 2016, moving to a permanent UTC+03:00 so the whole country stays on what was formerly summer time. That leaves Istanbul, which sits close to 29°E, on an offset well ahead of its solar time — sunrise in mid-winter comes after 08:30 local. TRT shares its offset with Moscow Standard Time, Arabia Standard Time and East Africa Time, so Istanbul is level with Moscow and Riyadh all year and one hour ahead of Central European Time during the European winter.
Best time to call between Kathmandu and Istanbul
Both Kathmandu and Istanbul sit inside the 9 AM – 5 PM working day between 11:45 AM–5:00 PM NPT, which is 9:00 AM–2:15 PM TRT. That gives roughly 5 hours and 15 minutes of shared time — the safest window for a live call or meeting.
Business hours overlap
Kathmandu and Istanbul share 5 hours of working-hours overlap (11:45 AM–5:00 PM NPT), so scheduling a live meeting is straightforward.
Kathmandu is 2 hours 45 minutes behind Istanbul (NPT UTC+05:45 → TRT UTC+03:00). The shared working window is 11:45 AM–5:00 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 Istanbul?
Kathmandu (NPT, UTC+05:45) is 2 hours 45 minutes behind Istanbul (TRT, UTC+03:00). The gap is currently -2h 45m.
How do I convert Kathmandu time to Istanbul time?
Add -2h 45m to Kathmandu local time. For example, 9:00 AM in Kathmandu is 6:15 AM in Istanbul.
What time is it in Istanbul right now?
Istanbul uses TRT at UTC+03:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -2h 45m offset from Kathmandu.
What is the best time to call Istanbul from Kathmandu?
Call between 11:45 AM and 5:00 PM NPT — that maps to 9:00 AM–2:15 PM TRT and keeps both parties inside the working day.
Which is behind, Kathmandu or Istanbul?
Kathmandu is 2 hours 45 minutes behind Istanbul. When it is 12:00 PM in Kathmandu it is 9:15 AM in Istanbul.
Do Kathmandu and Istanbul use different time zones?
Kathmandu (Nepal) uses NPT at UTC+05:45, while Istanbul (Turkey) uses TRT at UTC+03:00. The IANA identifiers are Asia/Kathmandu and Europe/Istanbul.
Does daylight saving time affect the Kathmandu–Istanbul difference?
Neither zone observes daylight saving time, so the -2h 45m offset between Kathmandu and Istanbul 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 Istanbul?
Not normally. The -2h 45m gap only pushes the date over the previous day.
What is the time difference between Kathmandu and Istanbul?
Istanbul is -2h 45m 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 Istanbul in?
Istanbul operates on Turkey Time (TRT), UTC+3 year-round. As a transcontinental city, Istanbul bridges European and Asian business hours.
What are the business hours in Kathmandu?
Standard business hours in Kathmandu are 10:00 AM - 5:00 PM NPT.
What are the business hours in Istanbul?
Standard business hours in Istanbul are 9:00 AM - 6:00 PM TRT.
What is the best time to schedule a call between Kathmandu and Istanbul?
The best overlap for a call is when both cities are in business hours. Kathmandu works 10:00 AM - 5:00 PM NPT and Istanbul works 9:00 AM - 6:00 PM TRT (-2h 45m difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Kathmandu and Istanbul?
Kathmandu uses NPR (रू) while Istanbul uses TRY (₺). Check current exchange rates when planning travel or business between these cities.
How do Kathmandu and Istanbul compare in size?
Kathmandu has a population of approximately 1.4 million (metro: 3.0 million), while Istanbul has approximately 15.5 million (metro: 15.8 million).
What are the major landmarks in Kathmandu and Istanbul?
Kathmandu is known for Boudhanath Stupa, Swayambhunath, Durbar Square. Istanbul is famous for Hagia Sophia, Blue Mosque, Topkapi Palace.
Do Kathmandu and Istanbul have stock exchanges?
Yes. Kathmandu has the NEPSE (Nepal Stock Exchange) and Istanbul has the Borsa Istanbul. The -2h 45m time difference affects trading hour overlaps between these exchanges.
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 TRT timezone?
Major cities in the TRT timezone include Istanbul, Ankara, Izmir, Bursa, Antalya.
What is the UTC offset for TRT?
Turkey Time (TRT) is at UTC+03:00.
What should I know about the TRT timezone?
Turkey has used a permanent UTC+03:00 since September 2016. TRT is level with Moscow Standard Time and Arabia Standard Time all year.
When is it midnight in Kathmandu, what time is it in Istanbul?
When it is 12:00 AM (midnight) in Kathmandu (NPT), it is -2h 45m later in Istanbul (TRT).
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