Nepal to AST
-9h 45mNepal
NPTSOURCEAST
ASTGreen rows indicate typical business hours (9 AM - 5 PM)
NPT and AST on the World Map
The map below highlights the NPT (Nepal Time) and AST (Atlantic 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.
AST – Atlantic Standard Time
UTC-04:00Atlantic Standard Time (AST) is the time zone for the Canadian Atlantic provinces and the Caribbean, 4 hours behind UTC.
- •Puerto Rico uses AST year-round and does not observe DST.
- •AST is 1 hour ahead of EST.
- •Halifax, the capital of Nova Scotia, is the largest city in AST Canada.
Nepal vs AST: Offsets, DST and Best Call Times
Nepal runs on Nepal Time (NPT) at UTC+05:45. AST runs on Atlantic Standard Time (AST) at UTC-04:00. That puts Nepal 9 hours 45 minutes behind AST — a difference of -9h 45m at the current offsets.
In practice, when it is 9:00 AM in Nepal it is 11:15 PM in AST on the previous day. Midnight in Nepal is 2:15 PM in AST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Nepal to AST time conversion table
| Nepal (NPT) | AST (AST) | Day |
|---|---|---|
| 12:00 AM | 2:15 PM | previous day |
| 6:00 AM | 8:15 PM | previous day |
| 7:00 AM | 9:15 PM | previous day |
| 8:00 AM | 10:15 PM | previous day |
| 9:00 AM | 11:15 PM | previous day |
| 12:00 PM | 2:15 AM | same day |
| 3:00 PM | 5:15 AM | same day |
| 5:00 PM | 7:15 AM | same day |
| 6:00 PM | 8:15 AM | same day |
| 9:00 PM | 11:15 AM | same day |
Why people convert Nepal to AST time
- Scheduling a call from Nepal to AST: a 10:00 AM start in Nepal lands at 12:15 AM in AST, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -9h 45m gap: Nepal and AST have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in AST is 11:15 PM in Nepal.
- Watching a live event or market open: Nepal viewers need 11:15 PM in AST to catch a 9:00 AM start there, and 9:45 AM if the event is anchored to Nepal.
- Always state the zone abbreviation, not just the hour. "3:00 PM NPT" is unambiguous; "3 PM" across a -9h 45m gap is not.
- With a -9h 45m gap there is no shared 9-to-5 window, so alternate the early start: one week Nepal takes the early slot, the next week AST does.
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 AST (Atlantic Standard Time)
Atlantic Standard Time (AST) covers Canada's Atlantic provinces (Nova Scotia, New Brunswick, Prince Edward Island, and most of Labrador), as well as several Caribbean nations. Puerto Rico and the US Virgin Islands use AST year-round without daylight saving time. The Canadian provinces switch to Atlantic Daylight Time (ADT) in summer.
Best time to call between Nepal and AST
With a -9h 45m offset there is no overlap inside a normal 9 AM – 5 PM day. AST opens at 9:00 AM AST, which is 11:15 PM in Nepal, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
Nepal and AST have no shared working hours because of the -9h 45m gap. Teams need to alternate early starts or rely on asynchronous handovers.
Nepal is 9 hours 45 minutes behind AST (NPT UTC+05:45 → AST UTC-04:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Nepal
Does not observe DST
AST
☀ Currently in DST
Standard: UTC-04:00 · DST: UTC-03:00
Clocks fall back on Sun, Nov 1, 2026
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 Nepal and AST?
Nepal (NPT, UTC+05:45) is 9 hours 45 minutes behind AST (AST, UTC-04:00). The gap is currently -9h 45m.
How do I convert Nepal time to AST time?
Add -9h 45m to Nepal local time. For example, 9:00 AM in Nepal is 11:15 PM in AST (previous day).
What time is it in AST right now?
AST uses AST at UTC-04:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -9h 45m offset from Nepal.
What is the best time to call AST from Nepal?
There is no shared working-hours window because of the -9h 45m gap. The closest option is 1:00 PM in Nepal, which is 3:15 AM in AST.
Which is behind, Nepal or AST?
Nepal is 9 hours 45 minutes behind AST. When it is 12:00 PM in Nepal it is 2:15 AM in AST.
Do Nepal and AST use different time zones?
Nepal (Nepal) uses NPT at UTC+05:45, while AST uses AST at UTC-04:00. The IANA identifiers are Asia/Kathmandu and America/Halifax.
Does daylight saving time affect the Nepal–AST difference?
Neither zone observes daylight saving time, so the -9h 45m offset between Nepal and AST is fixed all year.
Which other cities share Nepal's time zone?
NPT also covers Kathmandu, Pokhara, Lalitpur, Bharatpur, Biratnagar.
Which countries use NPT, Nepal's zone?
NPT is used in Nepal.
Is there a day difference between Nepal and AST?
Not normally. The -9h 45m gap only pushes the date over the previous day.
What is the time difference between Nepal and AST?
AST is -9h 45m from Nepal.
What timezone is Nepal in?
Nepal operates on its local timezone.
What timezone is AST in?
AST operates on its local timezone.
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 AST timezone?
Major cities in the AST timezone include Halifax, San Juan, Santo Domingo, Caracas, La Paz, Fredericton, Charlottetown.
What is the UTC offset for AST?
Atlantic Standard Time (AST) is at UTC-04:00. During daylight saving time, it shifts to ADT.
What should I know about the AST timezone?
Puerto Rico uses AST year-round and does not observe DST. AST is 1 hour ahead of EST.
When is it midnight in Nepal, what time is it in AST?
When it is 12:00 AM (midnight) in Nepal (NPT), it is -9h 45m later in AST (AST).
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