Does it account for Daylight Saving Time?

Yes, our converter uses the IANA timezone database, which includes all current DST rules for every timezone in the world.

UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. All timezones are defined as offsets from UTC.

Can I compare multiple timezones at once?

Yes, you can add multiple cities or timezones and see the equivalent times side by side.

How many timezones are there in the world?

There are 38 distinct UTC offsets in use, ranging from UTC-12 to UTC+14. This includes half-hour (UTC+5:30 India, UTC+9:30 Australia) and 45-minute offsets (UTC+5:45 Nepal, UTC+8:45 Australia).

What is the International Date Line?

The International Date Line (IDL) runs roughly along the 180° meridian in the Pacific Ocean. When you cross it westward, you gain a day; crossing eastward, you lose a day.

Why do some timezones have 30 or 45 minute offsets?

Countries chose offsets that best matched their solar noon. India uses UTC+5:30 and Nepal uses UTC+5:45 because standard hourly offsets didn't align well with their geography.

Which country has the most timezones?

France has the most (12 timezones) due to overseas territories. Russia spans 11 timezones. The US has 6 (including Hawaii and Alaska).

Sydney to Kathmandu

-4h 15m

Sydney

AESTSOURCE

Australia · UTC+10:00DST observed

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Kathmandu

NPT

Nepal · UTC+05:45

HH07

MM45

07:45 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Sydney

Kathmandu

12:00 AM

7:45 PM-1

2:00 AM

9:45 PM-1

4:00 AM

11:45 PM-1

6:00 AM

1:45 AM

8:00 AM

3:45 AM

10:00 AM

5:45 AM

12:00 PM

7:45 AM

2:00 PM

9:45 AM

4:00 PM

11:45 AM

6:00 PM

1:45 PM

8:00 PM

3:45 PM

10:00 PM

5:45 PM

Green rows indicate typical business hours (9 AM - 5 PM)

AEST and NPT on the World Map

The map below highlights the AEST (Australian Eastern Standard Time) and NPT (Nepal Time) timezone regions across the globe.

AEST Zone

→

NPT Zone

Explore all world timezones interactively →

AEST – Australian Eastern Standard Time

UTC+10:00

Australian Eastern Standard Time (AEST) covers eastern Australia, 10 hours ahead of UTC.

Countries in AEST

Australia (NSW, VIC, QLD, TAS, ACT)Papua New Guinea

Major Cities in AEST

SydneyMelbourneBrisbaneCanberraHobartGold Coast

Key Facts about AEST

•Queensland does not observe daylight saving time, staying on AEST year-round.
•Sydney and Melbourne switch to AEDT (UTC+11:00) in summer.
•The Australian Securities Exchange (ASX) operates on AEST/AEDT.
•AEST is 15 hours ahead of EST during winter.

Daylight Saving:Yes – switches to AEDT

Learn more about AEST on Wikipedia

NPT – Nepal Time

UTC+05:45

Nepal 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.

Countries in NPT

Nepal

Major Cities in NPT

KathmanduPokharaLalitpurBharatpurBiratnagar

Key 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.
•Nepal does not observe daylight saving time.
•Nepal is 15 minutes ahead of India, despite sharing a long open border.

Daylight Saving:No – UTC+05:45 year-round

Learn more about NPT on Wikipedia

About Sydney

Wikipedia

Sydney operates on Australian Eastern Standard Time (AEST/AEDT). As Australia's financial capital, Sydney opens global markets at the start of the business day.

Population:5.4 million

Metro:5.4 million

Business Hours:9:00 AM - 5:00 PM AEST

Currency:AUD (A$)

Stock Exchange:ASX (Australian Securities Exchange)

Key Landmarks

Sydney Opera HouseSydney Harbour BridgeBondi BeachDarling HarbourRoyal Botanic Garden

Did You Know?

Sydney is one of the first major cities to welcome the New Year.

Learn more about AEST timezone →

About Kathmandu

Wikipedia

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.

Population:1.4 million

Metro:3.0 million

Business Hours:10:00 AM - 5:00 PM NPT

Currency:NPR (रू)

Stock Exchange:NEPSE (Nepal Stock Exchange)

Key Landmarks

Boudhanath StupaSwayambhunathDurbar SquarePashupatinath TempleGarden of Dreams

Did You Know?

Nepal Time (NPT) is one of only three timezones offset by 45 minutes (UTC+5:45).

Learn more about NPT timezone →

Everything You Need to Know About Sydney and Kathmandu Time

Sydney runs on Australian Eastern Standard Time (AEST) at UTC+10:00. Kathmandu runs on Nepal Time (NPT) at UTC+05:45. That puts Sydney 4 hours 15 minutes behind Kathmandu — a difference of -4h 15m at the current offsets.

In practice, when it is 9:00 AM in Sydney it is 4:45 AM in Kathmandu. Midnight in Sydney is 7:45 PM in Kathmandu. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Sydney to Kathmandu time conversion table

Sydney (AEST)	Kathmandu (NPT)	Day
12:00 AM	7:45 PM	previous day
6:00 AM	1:45 AM	same day
7:00 AM	2:45 AM	same day
8:00 AM	3:45 AM	same day
9:00 AM	4:45 AM	same day
12:00 PM	7:45 AM	same day
3:00 PM	10:45 AM	same day
5:00 PM	12:45 PM	same day
6:00 PM	1:45 PM	same day
9:00 PM	4:45 PM	same day

Why people convert Sydney to Kathmandu time

Scheduling a call from Sydney to Kathmandu: a 10:00 AM start in Sydney lands at 5:45 AM in Kathmandu, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Sydney and Kathmandu are inside the 9-to-5 working day between 1:15 PM and 5:00 PM AEST time (9:00 AM–12:45 PM NPT). That is roughly 3 hours 45 minutes of usable overlap.
Booking travel or deliveries: tracking Kathmandu local time against Sydney keeps pickup windows and arrival estimates honest across the -4h 15m offset.

Always state the zone abbreviation, not just the hour. "3:00 PM AEST" is unambiguous; "3 PM" across a -4h 15m gap is not.
Block 1:15 PM–5:00 PM AEST as the recurring meeting window if you work primarily from Sydney and need Kathmandu colleagues present.
Sydney: Clocks spring forward on Sat, Oct 3, 2026. Re-check this page after that date because the offset changes and so does the -4h 15m gap.

About AEST (Australian Eastern Standard Time)

Australian Eastern Standard Time (AEST) is used in the eastern states of Australia including New South Wales, Victoria, Queensland, Tasmania, and the ACT. During summer (October to April), NSW, VIC, TAS, and ACT switch to Australian Eastern Daylight Time (AEDT, UTC+11:00), while Queensland remains on AEST year-round.

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 Sydney and Kathmandu

Both Sydney and Kathmandu sit inside the 9 AM – 5 PM working day between 1:15 PM–5:00 PM AEST, which is 9:00 AM–12:45 PM NPT. That gives roughly 3 hours and 45 minutes of shared time — the safest window for a live call or meeting.

Business hours overlap

Sydney and Kathmandu overlap for about 3 hours during the working day — enough for meetings if you avoid the edges of the window.

Sydney is 4 hours 15 minutes behind Kathmandu (AEST UTC+10:00 → NPT UTC+05:45). The shared working window is 1:15 PM–5:00 PM AEST. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

Sydney

❄ Currently in Standard Time

Standard: UTC+10:00 · DST: UTC+11:00

Clocks spring forward on Sat, Oct 3, 2026

Kathmandu

Does not observe DST

Learn More About Time

Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:

⏳

History of Timekeeping

From sundials to atomic clocks - 5000 years of measuring time

🌍

How Time Zones Work

UTC, offsets, and why zones don't follow straight lines

☀️

Daylight Saving Time

DST dates, which countries observe it, and the ongoing debate

Frequently Asked Questions

What is the time difference between Sydney and Kathmandu?

Sydney (AEST, UTC+10:00) is 4 hours 15 minutes behind Kathmandu (NPT, UTC+05:45). The gap is currently -4h 15m.

How do I convert Sydney time to Kathmandu time?

Add -4h 15m to Sydney local time. For example, 9:00 AM in Sydney is 4:45 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 -4h 15m offset from Sydney.

What is the best time to call Kathmandu from Sydney?

Call between 1:15 PM and 5:00 PM AEST — that maps to 9:00 AM–12:45 PM NPT and keeps both parties inside the working day.

Which is behind, Sydney or Kathmandu?

Sydney is 4 hours 15 minutes behind Kathmandu. When it is 12:00 PM in Sydney it is 7:45 AM in Kathmandu.

Do Sydney and Kathmandu use different time zones?

Sydney (Australia) uses AEST at UTC+10:00, while Kathmandu (Nepal) uses NPT at UTC+05:45. The IANA identifiers are Australia/Sydney and Asia/Kathmandu.

Does daylight saving time affect the Sydney–Kathmandu difference?

Neither zone observes daylight saving time, so the -4h 15m offset between Sydney and Kathmandu is fixed all year.

Which other cities share Sydney's time zone?

AEST also covers Sydney, Melbourne, Brisbane, Canberra, Hobart, Gold Coast.

Which countries use AEST, Sydney's zone?

AEST is used in Australia (NSW, VIC, QLD, TAS, ACT), Papua New Guinea.

Is there a day difference between Sydney and Kathmandu?

Not normally. The -4h 15m gap only pushes the date over the previous day.

What is the time difference between Sydney and Kathmandu?

Kathmandu is -4h 15m from Sydney.

What timezone is Sydney in?

Sydney operates on Australian Eastern Standard Time (AEST/AEDT). As Australia's financial capital, Sydney opens global markets at the start of the business day.

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 Sydney?

Standard business hours in Sydney are 9:00 AM - 5:00 PM AEST.

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 Sydney and Kathmandu?

The best overlap for a call is when both cities are in business hours. Sydney works 9:00 AM - 5:00 PM AEST and Kathmandu works 10:00 AM - 5:00 PM NPT (-4h 15m difference). Try scheduling during the overlapping window for maximum convenience.

What currencies are used in Sydney and Kathmandu?

Sydney uses AUD (A$) while Kathmandu uses NPR (रू). Check current exchange rates when planning travel or business between these cities.

How do Sydney and Kathmandu compare in size?

Sydney has a population of approximately 5.4 million (metro: 5.4 million), while Kathmandu has approximately 1.4 million (metro: 3.0 million).

What are the major landmarks in Sydney and Kathmandu?

Sydney is known for Sydney Opera House, Sydney Harbour Bridge, Bondi Beach. Kathmandu is famous for Boudhanath Stupa, Swayambhunath, Durbar Square.

Do Sydney and Kathmandu have stock exchanges?

Yes. Sydney has the ASX (Australian Securities Exchange) and Kathmandu has the NEPSE (Nepal Stock Exchange). The -4h 15m time difference affects trading hour overlaps between these exchanges.