Nepal to ACST
+3h 45mNepal
NPTSOURCEACST
ACSTGreen rows indicate typical business hours (9 AM - 5 PM)
NPT and ACST on the World Map
The map below highlights the NPT (Nepal Time) and ACST (Australian Central 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.
ACST – Australian Central Standard Time
UTC+09:30Australian Central Standard Time (ACST, UTC+09:30) covers South Australia and the Northern Territory, on a half-hour offset.
- •ACST uses a half-hour offset: UTC+09:30.
- •South Australia moves to ACDT (UTC+10:30) in summer; the Northern Territory does not.
- •Adelaide and Darwin are 30 minutes apart during daylight saving, level in winter.
- •Adelaide is one of the few major cities on a 30-minute offset.
Comparing Time Zones: Nepal and ACST
Nepal runs on Nepal Time (NPT) at UTC+05:45. ACST runs on Australian Central Standard Time (ACST) at UTC+09:30. That puts Nepal 3 hours 45 minutes ahead of ACST — a difference of +3h 45m at the current offsets.
In practice, when it is 9:00 AM in Nepal it is 12:45 PM in ACST. Midnight in Nepal is 3:45 AM in ACST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Nepal to ACST time conversion table
| Nepal (NPT) | ACST (ACST) | Day |
|---|---|---|
| 12:00 AM | 3:45 AM | same day |
| 6:00 AM | 9:45 AM | same day |
| 7:00 AM | 10:45 AM | same day |
| 8:00 AM | 11:45 AM | same day |
| 9:00 AM | 12:45 PM | same day |
| 12:00 PM | 3:45 PM | same day |
| 3:00 PM | 6:45 PM | same day |
| 5:00 PM | 8:45 PM | same day |
| 6:00 PM | 9:45 PM | same day |
| 9:00 PM | 12:45 AM | next day |
Why people convert Nepal to ACST time
- Scheduling a call from Nepal to ACST: a 10:00 AM start in Nepal lands at 1:45 PM in ACST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Nepal and ACST are inside the 9-to-5 working day between 9:00 AM and 1:15 PM NPT time (12:45 PM–5:00 PM ACST). That is roughly 4 hours 15 minutes of usable overlap.
- Booking travel or deliveries: tracking ACST local time against Nepal keeps pickup windows and arrival estimates honest across the +3h 45m offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM NPT" is unambiguous; "3 PM" across a +3h 45m gap is not.
- Block 9:00 AM–1:15 PM NPT as the recurring meeting window if you work primarily from Nepal and need ACST 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 ACST (Australian Central Standard Time)
Australian Central Standard Time (ACST) is the half-hour offset of UTC+09:30 used across South Australia and the Northern Territory, taking in Adelaide and Darwin. South Australia moves to Australian Central Daylight Time (ACDT, UTC+10:30) from the first Sunday in October to the first Sunday in April, but the Northern Territory does not observe daylight saving — so Adelaide and Darwin sit 30 minutes apart in summer and level with each other in winter. The half-hour offset means Adelaide is 30 minutes behind Sydney in winter and level with it during daylight saving, which regularly catches out travellers and meeting planners.
Best time to call between Nepal and ACST
Both Nepal and ACST sit inside the 9 AM – 5 PM working day between 9:00 AM–1:15 PM NPT, which is 12:45 PM–5:00 PM ACST. That gives roughly 4 hours and 15 minutes of shared time — the safest window for a live call or meeting.
Business hours overlap
Nepal and ACST overlap for about 4 hours during the working day — enough for meetings if you avoid the edges of the window.
Nepal is 3 hours 45 minutes ahead of ACST (NPT UTC+05:45 → ACST UTC+09:30). The shared working window is 9:00 AM–1:15 PM NPT. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Nepal
Does not observe DST
ACST
❄ Currently in Standard Time
Standard: UTC+09:30 · DST: UTC+10:30
Clocks spring forward on Sat, Oct 3, 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 ACST?
Nepal (NPT, UTC+05:45) is 3 hours 45 minutes ahead of ACST (ACST, UTC+09:30). The gap is currently +3h 45m.
How do I convert Nepal time to ACST time?
Add +3h 45m to Nepal local time. For example, 9:00 AM in Nepal is 12:45 PM in ACST.
What time is it in ACST right now?
ACST uses ACST at UTC+09:30. Use the live converter at the top of this page — it updates in real time and already accounts for the +3h 45m offset from Nepal.
What is the best time to call ACST from Nepal?
Call between 9:00 AM and 1:15 PM NPT — that maps to 12:45 PM–5:00 PM ACST and keeps both parties inside the working day.
Which is ahead, Nepal or ACST?
Nepal is 3 hours 45 minutes ahead of ACST. When it is 12:00 PM in Nepal it is 3:45 PM in ACST.
Do Nepal and ACST use different time zones?
Nepal (Nepal) uses NPT at UTC+05:45, while ACST uses ACST at UTC+09:30. The IANA identifiers are Asia/Kathmandu and Australia/Adelaide.
Does daylight saving time affect the Nepal–ACST difference?
Neither zone observes daylight saving time, so the +3h 45m offset between Nepal and ACST 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 ACST?
Not normally. The +3h 45m gap only pushes the date over for late-evening times.
What is the time difference between Nepal and ACST?
ACST is +3h 45m from Nepal.
What timezone is Nepal in?
Nepal operates on its local timezone.
What timezone is ACST in?
ACST 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 ACST timezone?
Major cities in the ACST timezone include Adelaide, Darwin, Alice Springs, Mount Gambier.
What is the UTC offset for ACST?
Australian Central Standard Time (ACST) is at UTC+09:30. During daylight saving time, it shifts to ACDT.
What should I know about the ACST timezone?
ACST uses a half-hour offset: UTC+09:30. South Australia moves to ACDT (UTC+10:30) in summer; the Northern Territory does not.
When is it midnight in Nepal, what time is it in ACST?
When it is 12:00 AM (midnight) in Nepal (NPT), it is +3h 45m later in ACST (ACST).
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