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).

NPT to EST

-10h 45m

NPT

NPTSOURCE

UTC+05:45

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

EST

UTC-04:00☀ DST active

HH01

MM15

01:15 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

NPT

EST

12:00 AM

2:15 PM-1

2:00 AM

4:15 PM-1

4:00 AM

6:15 PM-1

6:00 AM

8:15 PM-1

8:00 AM

10:15 PM-1

10:00 AM

12:15 AM

12:00 PM

2:15 AM

2:00 PM

4:15 AM

4:00 PM

6:15 AM

6:00 PM

8:15 AM

8:00 PM

10:15 AM

10:00 PM

12:15 PM

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

NPT and EST on the World Map

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

NPT Zone

→

EST Zone

Explore all world timezones interactively →

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

EST – Eastern Standard Time

UTC-05:00

Eastern Standard Time (EST) is the time zone for the eastern United States and Canada, 5 hours behind UTC.

Countries in EST

United States (Eastern)Canada (Ontario, Quebec)Mexico (Quintana Roo)PanamaJamaicaCayman IslandsHaitiBahamasTurks and CaicosColombiaPeruEcuador

Major Cities in EST

New York CityWashington D.C.MiamiTorontoPhiladelphiaAtlantaBostonMontrealDetroitCharlotteIndianapolisOttawaTampaOrlandoClevelandPittsburgh

Key Facts about EST

•EST is the most widely used time zone in the United States by population.
•The New York Stock Exchange (NYSE) and NASDAQ operate on Eastern Time, opening at 9:30 AM EST.
•23 US states are fully or partially in the Eastern Time Zone.
•EST was established by the Standard Time Act of 1918.
•Over 47% of the US population lives in the Eastern Time Zone.

Daylight Saving:Yes – switches to EDT

Learn more about EST on Wikipedia

Understanding the -10h 45m Gap: NPT vs EST

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

In practice, when it is 9:00 AM in NPT it is 10:15 PM in EST on the previous day. Midnight in NPT is 1:15 PM in EST. Neither zone observes daylight saving time, so the offset between them stays constant all year.

NPT to EST time conversion table

NPT (NPT)	EST (EST)	Day
12:00 AM	1:15 PM	previous day
6:00 AM	7:15 PM	previous day
7:00 AM	8:15 PM	previous day
8:00 AM	9:15 PM	previous day
9:00 AM	10:15 PM	previous day
12:00 PM	1:15 AM	same day
3:00 PM	4:15 AM	same day
5:00 PM	6:15 AM	same day
6:00 PM	7:15 AM	same day
9:00 PM	10:15 AM	same day

Why people convert NPT to EST time

Scheduling a call from NPT to EST: a 10:00 AM start in NPT lands at 11:15 PM in EST the previous day, so you can confirm the slot without doing the arithmetic yourself.
Handling a -10h 45m gap: NPT and EST 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 EST is 10:15 PM in NPT.
Keeping family and friends in sync: knowing that 8:00 PM in NPT is 9:15 AM in EST makes it easy to avoid calling at 3 AM.

Always state the zone abbreviation, not just the hour. "3:00 PM NPT" is unambiguous; "3 PM" across a -10h 45m gap is not.
With a -10h 45m gap there is no shared 9-to-5 window, so alternate the early start: one week NPT takes the early slot, the next week EST 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 EST (Eastern Standard Time)

Eastern Standard Time (EST) is observed during the winter months in the eastern part of North America. It covers 23 US states and parts of Canada including Ontario and Quebec. EST is the most populous time zone in the United States, home to major financial centers like New York City and global organizations headquartered in Washington D.C. During daylight saving time (March–November), clocks shift to Eastern Daylight Time (EDT, UTC-04:00). The time zone also covers parts of the Caribbean and Central America including Panama, Jamaica, and the Cayman Islands.

Best time to call between NPT and EST

With a -10h 45m offset there is no overlap inside a normal 9 AM – 5 PM day. EST opens at 9:00 AM EST, which is 10:15 PM in NPT, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

NPT and EST have no shared working hours because of the -10h 45m gap. Teams need to alternate early starts or rely on asynchronous handovers.

NPT is 10 hours 45 minutes behind EST (NPT UTC+05:45 → EST UTC-05:00). 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

NPT

Does not observe DST

EST

☀ Currently in DST

Standard: UTC-05:00 · DST: UTC-04:00

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:

⏳

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 NPT and EST?

NPT (NPT, UTC+05:45) is 10 hours 45 minutes behind EST (EST, UTC-05:00). The gap is currently -10h 45m.

How do I convert NPT time to EST time?

Add -10h 45m to NPT local time. For example, 9:00 AM in NPT is 10:15 PM in EST (previous day).

What time is it in EST right now?

EST uses EST at UTC-05:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -10h 45m offset from NPT.

What is the best time to call EST from NPT?

There is no shared working-hours window because of the -10h 45m gap. The closest option is 1:00 PM in NPT, which is 2:15 AM in EST.

Which is behind, NPT or EST?

NPT is 10 hours 45 minutes behind EST. When it is 12:00 PM in NPT it is 1:15 AM in EST.

Does daylight saving time affect the NPT–EST difference?

Neither zone observes daylight saving time, so the -10h 45m offset between NPT and EST is fixed all year.

Which other cities share NPT's time zone?

NPT also covers Kathmandu, Pokhara, Lalitpur, Bharatpur, Biratnagar.

Which countries use NPT, NPT's zone?

NPT is used in Nepal.

Is there a day difference between NPT and EST?

Not normally. The -10h 45m gap only pushes the date over the previous day.

What is the time difference between NPT and EST?

EST is -10h 45m from NPT.

What timezone is NPT in?

NPT operates on its local timezone.

What timezone is EST in?

EST 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 EST timezone?

Major cities in the EST timezone include New York City, Washington D.C., Miami, Toronto, Philadelphia, Atlanta, Boston, Montreal.

What is the UTC offset for EST?

Eastern Standard Time (EST) is at UTC-05:00. During daylight saving time, it shifts to EDT.

What should I know about the EST timezone?

EST is the most widely used time zone in the United States by population. The New York Stock Exchange (NYSE) and NASDAQ operate on Eastern Time, opening at 9:30 AM EST.