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 JST

+3h 15m

NPT

NPTSOURCE

UTC+05:45

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

JST

UTC+09:00

HH03

MM15

15:15 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

NPT

JST

12:00 AM

3:15 AM

2:00 AM

5:15 AM

4:00 AM

7:15 AM

6:00 AM

9:15 AM

8:00 AM

11:15 AM

10:00 AM

1:15 PM

12:00 PM

3:15 PM

2:00 PM

5:15 PM

4:00 PM

7:15 PM

6:00 PM

9:15 PM

8:00 PM

11:15 PM

10:00 PM

1:15 AM+1

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

NPT and JST on the World Map

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

NPT Zone

→

JST 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

JST – Japan Standard Time

UTC+09:00

Japan Standard Time (JST) is the time zone for Japan, 9 hours ahead of UTC.

Countries in JST

Japan

Major Cities in JST

TokyoOsakaYokohamaNagoyaSapporoKyotoKobeFukuokaHiroshima

Key Facts about JST

•Japan does not observe daylight saving time.
•Tokyo is the most populous metropolitan area in the world.
•The Tokyo Stock Exchange operates from 9:00 AM to 3:00 PM JST.
•JST is 14 hours ahead of EST and 9 hours ahead of GMT.

Daylight Saving:No – UTC+09:00 year-round

Learn more about JST on Wikipedia

Everything You Need to Know About NPT and JST Time

NPT runs on Nepal Time (NPT) at UTC+05:45. JST runs on Japan Standard Time (JST) at UTC+09:00. That puts NPT 3 hours 15 minutes ahead of JST — a difference of +3h 15m at the current offsets.

In practice, when it is 9:00 AM in NPT it is 12:15 PM in JST. Midnight in NPT is 3:15 AM in JST. Neither zone observes daylight saving time, so the offset between them stays constant all year.

NPT to JST time conversion table

NPT (NPT)	JST (JST)	Day
12:00 AM	3:15 AM	same day
6:00 AM	9:15 AM	same day
7:00 AM	10:15 AM	same day
8:00 AM	11:15 AM	same day
9:00 AM	12:15 PM	same day
12:00 PM	3:15 PM	same day
3:00 PM	6:15 PM	same day
5:00 PM	8:15 PM	same day
6:00 PM	9:15 PM	same day
9:00 PM	12:15 AM	next day

Why people convert NPT to JST time

Scheduling a call from NPT to JST: a 10:00 AM start in NPT lands at 1:15 PM in JST, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both NPT and JST are inside the 9-to-5 working day between 9:00 AM and 1:45 PM NPT time (12:15 PM–5:00 PM JST). That is roughly 4 hours 45 minutes of usable overlap.
Keeping family and friends in sync: knowing that 8:00 PM in NPT is 11:15 PM in JST 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 +3h 15m gap is not.
Block 9:00 AM–1:45 PM NPT as the recurring meeting window if you work primarily from NPT and need JST 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 JST (Japan Standard Time)

Japan Standard Time (JST) is the standard time zone for all of Japan. Japan does not observe daylight saving time. JST is 9 hours ahead of UTC and 14 hours ahead of EST. The Tokyo Stock Exchange, the world's third largest by market capitalization, operates on JST. South Korea uses the same offset (KST) but it is a distinct time zone.

Best time to call between NPT and JST

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

Business hours overlap

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

NPT is 3 hours 15 minutes ahead of JST (NPT UTC+05:45 → JST UTC+09:00). The shared working window is 9:00 AM–1:45 PM NPT. Remember to re-check around daylight-saving transitions.

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 JST?

NPT (NPT, UTC+05:45) is 3 hours 15 minutes ahead of JST (JST, UTC+09:00). The gap is currently +3h 15m.

How do I convert NPT time to JST time?

Add +3h 15m to NPT local time. For example, 9:00 AM in NPT is 12:15 PM in JST.

What time is it in JST right now?

JST uses JST at UTC+09:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +3h 15m offset from NPT.