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).

Vienna to Kathmandu

+3h 45m

Vienna

CESTSOURCE

Austria · UTC+02:00☀ DST active

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Kathmandu

NPT

Nepal · UTC+05:45

HH03

MM45

15:45 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Vienna

Kathmandu

12:00 AM

3:45 AM

2:00 AM

5:45 AM

4:00 AM

7:45 AM

6:00 AM

9:45 AM

8:00 AM

11:45 AM

10:00 AM

1:45 PM

12:00 PM

3:45 PM

2:00 PM

5:45 PM

4:00 PM

7:45 PM

6:00 PM

9:45 PM

8:00 PM

11:45 PM

10:00 PM

1:45 AM+1

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

CEST and NPT on the World Map

The map below highlights the CEST (Central European Time) and NPT (Nepal Time) timezone regions across the globe.

CEST Zone

→

NPT Zone

Explore all world timezones interactively →

CET – Central European Time

UTC+01:00

Central European Time (CET) is used across most of Western and Central Europe, 1 hour ahead of UTC.

Countries in CET

GermanyFranceItalySpainNetherlandsBelgiumAustriaSwitzerlandPolandCzech RepublicSwedenNorwayDenmarkHungaryCroatiaSerbiaSlovakiaSloveniaBosnia and HerzegovinaNorth MacedoniaAlbaniaMontenegroLuxembourgMaltaTunisiaAlgeriaNigeria

Major Cities in CET

ParisBerlinRomeMadridAmsterdamBrusselsViennaWarsawZurichStockholmOsloCopenhagenPragueBudapestBarcelonaMunichMilanLagos

Key Facts about CET

•CET covers more European countries than any other time zone.
•Spain uses CET despite being geographically aligned with GMT/WET.
•The Frankfurt Stock Exchange, Euronext (Amsterdam/Paris), and Borsa Italiana operate on CET.
•Over 500 million people live in the CET time zone.
•France moved to CET during the German occupation in WWII and never switched back.

Daylight Saving:Yes – switches to CEST

Learn more about CET 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 Vienna

Wikipedia

Vienna operates on Central European Time (CET/CEST). As a major EU hub and headquarters for international organizations, Vienna coordinates Central European business.

Population:1.9 million

Metro:2.9 million

Business Hours:8:00 AM - 5:00 PM CET

Currency:EUR (€)

Stock Exchange:Wiener Börse

Key Landmarks

Schönbrunn PalaceSt. Stephen's CathedralBelvedere PalaceHofburgVienna State Opera

Did You Know?

Vienna has more than 50 theaters and opera houses.

Learn more about CEST 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 →

Understanding the +3h 45m Gap: Vienna vs Kathmandu

Vienna runs on Central European Summer Time (CEST) at UTC+02:00, currently observing daylight saving time. Kathmandu runs on Nepal Time (NPT) at UTC+05:45. That puts Vienna 3 hours 45 minutes ahead of Kathmandu — a difference of +3h 45m at the current offsets.

In practice, when it is 9:00 AM in Vienna it is 12:45 PM in Kathmandu. Midnight in Vienna is 3:45 AM in Kathmandu.Vienna observes daylight saving time while Kathmandu does not, so the gap narrows or widens by an hour part of the year.

Vienna to Kathmandu time conversion table

Vienna (CEST)	Kathmandu (NPT)	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 Vienna to Kathmandu time

Scheduling a call from Vienna to Kathmandu: a 10:00 AM start in Vienna lands at 1:45 PM in Kathmandu, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Vienna and Kathmandu are inside the 9-to-5 working day between 9:00 AM and 1:15 PM CEST time (12:45 PM–5:00 PM NPT). That is roughly 4 hours 15 minutes of usable overlap.
Coordinating a Vienna-based team with Kathmandu contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.

Always state the zone abbreviation, not just the hour. "3:00 PM CEST" is unambiguous; "3 PM" across a +3h 45m gap is not.
Block 9:00 AM–1:15 PM CEST as the recurring meeting window if you work primarily from Vienna and need Kathmandu colleagues present.
Vienna: Clocks fall back on Sun, Oct 25, 2026. Re-check this page after that date because the offset changes and so does the +3h 45m gap.

About CET (Central European Time)

Central European Time (CET) is the standard time zone for most of Europe, covering over 30 countries from Spain to Poland, and from Norway to Italy. CET is 1 hour ahead of GMT and is used by the European Union's most populous nations. During summer, most CET countries switch to Central European Summer Time (CEST, UTC+02:00). Major European financial markets in Frankfurt, Paris, and Amsterdam operate on CET.

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 Vienna and Kathmandu

Both Vienna and Kathmandu sit inside the 9 AM – 5 PM working day between 9:00 AM–1:15 PM CEST, which is 12:45 PM–5:00 PM NPT. That gives roughly 4 hours and 15 minutes of shared time — the safest window for a live call or meeting.

Business hours overlap

Vienna and Kathmandu overlap for about 4 hours during the working day — enough for meetings if you avoid the edges of the window.

Vienna is 3 hours 45 minutes ahead of Kathmandu (CEST UTC+02:00 → NPT UTC+05:45). The shared working window is 9:00 AM–1:15 PM CEST. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

Vienna

☀ Currently in DST

Standard: UTC+01:00 · DST: UTC+02:00

Clocks fall back on Sun, Oct 25, 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 Vienna and Kathmandu?

Vienna (CEST, UTC+02:00) is 3 hours 45 minutes ahead of Kathmandu (NPT, UTC+05:45). The gap is currently +3h 45m.

How do I convert Vienna time to Kathmandu time?

Add +3h 45m to Vienna local time. For example, 9:00 AM in Vienna is 12:45 PM 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 +3h 45m offset from Vienna.

What is the best time to call Kathmandu from Vienna?

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

Which is ahead, Vienna or Kathmandu?

Vienna is 3 hours 45 minutes ahead of Kathmandu. When it is 12:00 PM in Vienna it is 3:45 PM in Kathmandu.

Do Vienna and Kathmandu use different time zones?

Vienna (Austria) uses CEST at UTC+02:00, while Kathmandu (Nepal) uses NPT at UTC+05:45. The IANA identifiers are Europe/Vienna and Asia/Kathmandu.

Does daylight saving time affect the Vienna–Kathmandu difference?

Yes at the moment: Vienna is on daylight saving time and Kathmandu is not, so the +3h 45m gap shifts by an hour when exactly one of them changes clocks.

Which other cities share Vienna's time zone?

CEST also covers Paris, Berlin, Rome, Madrid, Amsterdam, Brussels, Vienna, Warsaw and 10 more.

Which countries use CEST, Vienna's zone?

CEST is used in Germany, France, Italy, Spain, Netherlands, Belgium, Austria, Switzerland and 19 more.

Is there a day difference between Vienna and Kathmandu?

Not normally. The +3h 45m gap only pushes the date over for late-evening times.

What is the time difference between Vienna and Kathmandu?

Kathmandu is +3h 45m from Vienna.

What timezone is Vienna in?

Vienna operates on Central European Time (CET/CEST). As a major EU hub and headquarters for international organizations, Vienna coordinates Central European business.

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 Vienna?

Standard business hours in Vienna are 8:00 AM - 5:00 PM CET.

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 Vienna and Kathmandu?

The best overlap for a call is when both cities are in business hours. Vienna works 8:00 AM - 5:00 PM CET and Kathmandu works 10:00 AM - 5:00 PM NPT (+3h 45m difference). Try scheduling during the overlapping window for maximum convenience.

What currencies are used in Vienna and Kathmandu?

Vienna uses EUR (€) while Kathmandu uses NPR (रू). Check current exchange rates when planning travel or business between these cities.

How do Vienna and Kathmandu compare in size?

Vienna has a population of approximately 1.9 million (metro: 2.9 million), while Kathmandu has approximately 1.4 million (metro: 3.0 million).

What are the major landmarks in Vienna and Kathmandu?

Vienna is known for Schönbrunn Palace, St. Stephen's Cathedral, Belvedere Palace. Kathmandu is famous for Boudhanath Stupa, Swayambhunath, Durbar Square.

Do Vienna and Kathmandu have stock exchanges?

Yes. Vienna has the Wiener Börse and Kathmandu has the NEPSE (Nepal Stock Exchange). The +3h 45m time difference affects trading hour overlaps between these exchanges.