Does it handle Daylight Saving Time?

Yes, the tool automatically adjusts for Daylight Saving Time based on the specific date you select, ensuring accurate conversions year-round.

Can I add multiple cities?

Yes, you can add as many cities as you need to the dashboard to compare times across your entire global network simultaneously.

Iran to Kathmandu

+2h 15m

Iran

IRSTSOURCE

UTC+03:30

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Kathmandu

NPT

Nepal · UTC+05:45

HH02

MM15

14:15 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Iran

Kathmandu

12:00 AM

2:15 AM

2:00 AM

4:15 AM

4:00 AM

6:15 AM

6:00 AM

8:15 AM

8:00 AM

10:15 AM

10:00 AM

12:15 PM

12:00 PM

2:15 PM

2:00 PM

4:15 PM

4:00 PM

6:15 PM

6:00 PM

8:15 PM

8:00 PM

10:15 PM

10:00 PM

12:15 AM+1

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

IRST and NPT on the World Map

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

IRST Zone

→

NPT Zone

Explore all world timezones interactively →

IRST – Iran Standard Time

UTC+03:30

Iran Standard Time (IRST) is the time zone for Iran, 3 hours and 30 minutes ahead of UTC.

Countries in IRST

Iran

Major Cities in IRST

TehranIsfahanMashhadTabrizShirazKaraj

Key Facts about IRST

•IRST is one of only a few time zones with a 30-minute offset.
•Iran observes daylight saving time, switching to IRDT (UTC+04:30).
•Tehran has a metropolitan population of over 16 million.

Daylight Saving:Yes – switches to IRDT

Learn more about IRST 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 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 →

Comparing Time Zones: Iran and Kathmandu

Iran runs on Iran Standard Time (IRST) at UTC+03:30. Kathmandu runs on Nepal Time (NPT) at UTC+05:45. That puts Iran 2 hours 15 minutes ahead of Kathmandu — a difference of +2h 15m at the current offsets.

In practice, when it is 9:00 AM in Iran it is 11:15 AM in Kathmandu. Midnight in Iran is 2:15 AM in Kathmandu. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Iran to Kathmandu time conversion table

Iran (IRST)	Kathmandu (NPT)	Day
12:00 AM	2:15 AM	same day
6:00 AM	8:15 AM	same day
7:00 AM	9:15 AM	same day
8:00 AM	10:15 AM	same day
9:00 AM	11:15 AM	same day
12:00 PM	2:15 PM	same day
3:00 PM	5:15 PM	same day
5:00 PM	7:15 PM	same day
6:00 PM	8:15 PM	same day
9:00 PM	11:15 PM	same day

Why people convert Iran to Kathmandu time

Scheduling a call from Iran to Kathmandu: a 10:00 AM start in Iran lands at 12:15 PM in Kathmandu, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Iran and Kathmandu are inside the 9-to-5 working day between 9:00 AM and 2:45 PM IRST time (11:15 AM–5:00 PM NPT). That is roughly 5 hours 45 minutes of usable overlap.
Keeping family and friends in sync: knowing that 8:00 PM in Iran is 10:15 PM in Kathmandu makes it easy to avoid calling at 3 AM.

Always state the zone abbreviation, not just the hour. "3:00 PM IRST" is unambiguous; "3 PM" across a +2h 15m gap is not.
Block 9:00 AM–2:45 PM IRST as the recurring meeting window if you work primarily from Iran and need Kathmandu colleagues present.

About IRST (Iran Standard Time)

Iran Standard Time (IRST) is one of the few time zones with a 30-minute offset. Iran observes daylight saving time (IRDT, UTC+04:30) from late March to late September. Tehran, the capital, is one of the largest cities in the Middle East.

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 Iran and Kathmandu

Both Iran and Kathmandu sit inside the 9 AM – 5 PM working day between 9:00 AM–2:45 PM IRST, which is 11:15 AM–5:00 PM NPT. That gives roughly 5 hours and 45 minutes of shared time — the safest window for a live call or meeting.

Business hours overlap

Iran and Kathmandu share 5 hours of working-hours overlap (9:00 AM–2:45 PM IRST), so scheduling a live meeting is straightforward.

Iran is 2 hours 15 minutes ahead of Kathmandu (IRST UTC+03:30 → NPT UTC+05:45). The shared working window is 9:00 AM–2:45 PM IRST. 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 Iran and Kathmandu?

Iran (IRST, UTC+03:30) is 2 hours 15 minutes ahead of Kathmandu (NPT, UTC+05:45). The gap is currently +2h 15m.

How do I convert Iran time to Kathmandu time?

Add +2h 15m to Iran local time. For example, 9:00 AM in Iran is 11:15 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 +2h 15m offset from Iran.

What is the best time to call Kathmandu from Iran?

Call between 9:00 AM and 2:45 PM IRST — that maps to 11:15 AM–5:00 PM NPT and keeps both parties inside the working day.

Which is ahead, Iran or Kathmandu?

Iran is 2 hours 15 minutes ahead of Kathmandu. When it is 12:00 PM in Iran it is 2:15 PM in Kathmandu.

Do Iran and Kathmandu use different time zones?

Iran (Iran) uses IRST at UTC+03:30, while Kathmandu (Nepal) uses NPT at UTC+05:45. The IANA identifiers are Asia/Tehran and Asia/Kathmandu.

Does daylight saving time affect the Iran–Kathmandu difference?

Neither zone observes daylight saving time, so the +2h 15m offset between Iran and Kathmandu is fixed all year.

Which other cities share Iran's time zone?

IRST also covers Tehran, Isfahan, Mashhad, Tabriz, Shiraz, Karaj.

Which countries use IRST, Iran's zone?

IRST is used in Iran.

Is there a day difference between Iran and Kathmandu?

Not normally. The +2h 15m gap only pushes the date over for late-evening times.

What is the time difference between Iran and Kathmandu?

Kathmandu is +2h 15m from Iran.

What timezone is Iran in?

Iran operates on its local timezone.

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.