Riyadh to Kathmandu
+2h 45mRiyadh
ASTSOURCEKathmandu
NPTGreen rows indicate typical business hours (9 AM - 5 PM)
AST and NPT on the World Map
The map below highlights the AST (Arabia Standard Time) and NPT (Nepal Time) timezone regions across the globe.
AST – Arabia Standard Time
UTC+03:00Arabia Standard Time (AST, UTC+03:00) is the time zone for Saudi Arabia and the other Gulf states of the Arabian peninsula.
- •None of the Gulf states on Arabia Standard Time observe daylight saving.
- •AST is the same offset as Moscow Standard Time and East Africa Time.
- •Riyadh is one hour ahead of Central European Time in winter.
- •The AST abbreviation is shared with Atlantic Standard Time (UTC-04:00).
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 Riyadh
WikipediaRiyadh operates on Arabia Standard Time (AST), UTC+3. As OPEC's de facto capital and home to Tadawul, Riyadh time impacts global energy markets.
Riyadh is growing rapidly as part of Saudi Vision 2030 modernization.
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).
Riyadh vs Kathmandu: Offsets, DST and Best Call Times
Riyadh runs on Arabian Standard Time (AST) at UTC+03:00. Kathmandu runs on Nepal Time (NPT) at UTC+05:45. That puts Riyadh 2 hours 45 minutes ahead of Kathmandu — a difference of +2h 45m at the current offsets.
In practice, when it is 9:00 AM in Riyadh it is 11:45 AM in Kathmandu. Midnight in Riyadh is 2:45 AM in Kathmandu. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Riyadh to Kathmandu time conversion table
| Riyadh (AST) | Kathmandu (NPT) | Day |
|---|---|---|
| 12:00 AM | 2:45 AM | same day |
| 6:00 AM | 8:45 AM | same day |
| 7:00 AM | 9:45 AM | same day |
| 8:00 AM | 10:45 AM | same day |
| 9:00 AM | 11:45 AM | same day |
| 12:00 PM | 2:45 PM | same day |
| 3:00 PM | 5:45 PM | same day |
| 5:00 PM | 7:45 PM | same day |
| 6:00 PM | 8:45 PM | same day |
| 9:00 PM | 11:45 PM | same day |
Why people convert Riyadh to Kathmandu time
- Scheduling a call from Riyadh to Kathmandu: a 10:00 AM start in Riyadh lands at 12:45 PM in Kathmandu, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Riyadh and Kathmandu are inside the 9-to-5 working day between 9:00 AM and 2:15 PM AST time (11:45 AM–5:00 PM NPT). That is roughly 5 hours 15 minutes of usable overlap.
- Booking travel or deliveries: tracking Kathmandu local time against Riyadh keeps pickup windows and arrival estimates honest across the +2h 45m offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM AST" is unambiguous; "3 PM" across a +2h 45m gap is not.
- Block 9:00 AM–2:15 PM AST as the recurring meeting window if you work primarily from Riyadh and need Kathmandu colleagues present.
About AST (Arabia Standard Time)
Arabia Standard Time (AST) is fixed at UTC+03:00 all year across Saudi Arabia, Qatar, Kuwait, Bahrain, Iraq and Yemen. None of these countries observes daylight saving time, so the offset never changes. The abbreviation collides with Atlantic Standard Time (UTC-04:00) used in eastern Canada and the Caribbean; this page covers the Arabian peninsula meaning. Arabia Standard Time is the same offset as Moscow Standard Time and East Africa Time, which makes scheduling with Europe straightforward — Riyadh is one hour ahead of Central European Time in winter and level with it during European summer time.
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 Riyadh and Kathmandu
Both Riyadh and Kathmandu sit inside the 9 AM – 5 PM working day between 9:00 AM–2:15 PM AST, which is 11:45 AM–5:00 PM NPT. That gives roughly 5 hours and 15 minutes of shared time — the safest window for a live call or meeting.
Business hours overlap
Riyadh and Kathmandu share 5 hours of working-hours overlap (9:00 AM–2:15 PM AST), so scheduling a live meeting is straightforward.
Riyadh is 2 hours 45 minutes ahead of Kathmandu (AST UTC+03:00 → NPT UTC+05:45). The shared working window is 9:00 AM–2:15 PM AST. 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 Riyadh and Kathmandu?
Riyadh (AST, UTC+03:00) is 2 hours 45 minutes ahead of Kathmandu (NPT, UTC+05:45). The gap is currently +2h 45m.
How do I convert Riyadh time to Kathmandu time?
Add +2h 45m to Riyadh local time. For example, 9:00 AM in Riyadh is 11:45 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 +2h 45m offset from Riyadh.
What is the best time to call Kathmandu from Riyadh?
Call between 9:00 AM and 2:15 PM AST — that maps to 11:45 AM–5:00 PM NPT and keeps both parties inside the working day.
Which is ahead, Riyadh or Kathmandu?
Riyadh is 2 hours 45 minutes ahead of Kathmandu. When it is 12:00 PM in Riyadh it is 2:45 PM in Kathmandu.
Do Riyadh and Kathmandu use different time zones?
Riyadh (Saudi Arabia) uses AST at UTC+03:00, while Kathmandu (Nepal) uses NPT at UTC+05:45. The IANA identifiers are Asia/Riyadh and Asia/Kathmandu.
Does daylight saving time affect the Riyadh–Kathmandu difference?
Neither zone observes daylight saving time, so the +2h 45m offset between Riyadh and Kathmandu is fixed all year.
Which other cities share Riyadh's time zone?
AST also covers Riyadh, Jeddah, Doha, Kuwait City, Baghdad.
Which countries use AST, Riyadh's zone?
AST is used in Saudi Arabia, Qatar, Kuwait, Bahrain, Iraq, Yemen.
Is there a day difference between Riyadh and Kathmandu?
Not normally. The +2h 45m gap only pushes the date over for late-evening times.
What is the time difference between Riyadh and Kathmandu?
Kathmandu is +2h 45m from Riyadh.
What timezone is Riyadh in?
Riyadh operates on Arabia Standard Time (AST), UTC+3. As OPEC's de facto capital and home to Tadawul, Riyadh time impacts global energy markets.
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 Riyadh?
Standard business hours in Riyadh are 8:00 AM - 4:00 PM AST (Sunday-Thursday).
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 Riyadh and Kathmandu?
The best overlap for a call is when both cities are in business hours. Riyadh works 8:00 AM - 4:00 PM AST (Sunday-Thursday) and Kathmandu works 10:00 AM - 5:00 PM NPT (+2h 45m difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Riyadh and Kathmandu?
Riyadh uses SAR (﷼) while Kathmandu uses NPR (रू). Check current exchange rates when planning travel or business between these cities.
How do Riyadh and Kathmandu compare in size?
Riyadh has a population of approximately 7.7 million (metro: 7.7 million), while Kathmandu has approximately 1.4 million (metro: 3.0 million).
What are the major landmarks in Riyadh and Kathmandu?
Riyadh is known for Kingdom Centre, Masmak Fortress, National Museum. Kathmandu is famous for Boudhanath Stupa, Swayambhunath, Durbar Square.
Do Riyadh and Kathmandu have stock exchanges?
Yes. Riyadh has the Tadawul (Saudi Stock Exchange) and Kathmandu has the NEPSE (Nepal Stock Exchange). The +2h 45m time difference affects trading hour overlaps between these exchanges.
Which countries use AST (Arabia Standard Time)?
AST is used in Saudi Arabia, Qatar, Kuwait, Bahrain, Iraq, Yemen.
Does AST observe daylight saving time?
No, AST does not observe daylight saving time and remains at UTC+03:00 year-round.
What are some interesting facts about AST?
None of the Gulf states on Arabia Standard Time observe daylight saving. AST is the same offset as Moscow Standard Time and East Africa Time.
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 Riyadh, what time is it in Kathmandu?
When it is 12:00 AM (midnight) in Riyadh (AST), it is +2h 45m later in Kathmandu (NPT).
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