Kathmandu to Tehran Time
NPT to IRST Converter — 9 AM NPT is 6:45 AM IRST
Kathmandu is 2 hours and 15 minutes ahead of Tehran. Convert any time between Kathmandu (NPT) and Tehran (IRST/IRDT) instantly.
Kathmandu
Nepal
Tehran
Iran
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Time Zone Comparison
Kathmandu to Tehran Time Conversion Table
| Kathmandu (NPT) | Tehran (IRST) |
|---|---|
| 12:00 AM | 9:45 PM |
| 2:00 AM | 11:45 PM |
| 4:00 AM | 1:45 AM |
| 6:00 AM | 3:45 AM |
| 8:00 AM | 5:45 AM |
| 10:00 AM | 7:45 AM |
| 12:00 PM | 9:45 AM |
| 2:00 PM | 11:45 AM |
| 4:00 PM | 1:45 PM |
| 6:00 PM | 3:45 PM |
| 8:00 PM | 5:45 PM |
| 10:00 PM | 7:45 PM |
Kathmandu & Tehran — Business & Scheduling Guide
Kathmandu (Nepal) is an important regional economy, with key industries in diverse sectors including services and trade. Tehran (Iran) is an important regional economy, known for diverse sectors including services and trade. With a 2.25-hour time difference, professionals frequently schedule cross-border calls between these two cities for international trade, remote team collaboration, and client meetings.
Scheduling Meetings Between Kathmandu and Tehran
With only a 2.25-hour gap, Kathmandu and Tehran have generous overlapping work hours. Morning calls in the earlier time zone align well with mid-day in the other. Business hours typically follow a 9 AM–5 PM schedule. Business hours typically follow a 9 AM–5 PM schedule. Most teams find that late morning to early afternoon offers the widest window for collaboration.
Daylight Saving Time Considerations
Tehran observes Daylight Saving Time (IRST/IRDT), while Kathmandu stays on NPT year-round. When Tehran switches to daylight time, the effective time difference shifts by 1 hour. This typically happens in spring and fall, and the exact dates vary by country. If you have recurring cross-timezone meetings, recalculate the schedule after each DST transition.
NPT to IRST — Quick Reference
NPT (NPT) stands for the timezone used in Kathmandu, Nepal (UTC+5:45). IRST (IRST/IRDT) is the timezone used in Tehran, Iran (UTC+3:30). Kathmandu is 2 hours and 15 minutes ahead of Tehran.
To convert NPT to IRST, subtract 2.25 hours from NPT time. For example, NPT 9:00 AM = IRST 6:45 AM.
Key Facts
- •Time difference: Kathmandu (UTC+5:45) is 2 hours and 15 minutes ahead of Tehran (UTC+3:30).
- •Daylight Saving Time: Kathmandu does not observe DST (NPT). Tehran observes DST (IRST/IRDT).
- •Regions: Kathmandu is located in Nepal and uses the NPT time zone. Tehran is located in Iran and uses the IRST/IRDT time zone.
- •Best time to call: The best time to call between Kathmandu and Tehran is 12:00 PM to 4:00 PM in Kathmandu time, when both cities have overlapping standard working hours.
Frequently Asked Questions
What is the time difference between Kathmandu and Tehran?
Kathmandu is 2 hours and 15 minutes ahead of Tehran.
What time is it in Tehran when it's 9 AM in Kathmandu?
When it's 9:00 AM in Kathmandu, it is 6:45 AM in Tehran.
What time is 9 PM NPT in IRST?
9 PM NPT (Kathmandu time) is 6:45 PM IRST (Tehran time). This is a common time people check when scheduling evening calls across these two time zones.
When is the best time to schedule a meeting between Kathmandu and Tehran?
The best time to schedule a meeting is between 12:00 PM to 4:00 PM in Kathmandu time, when both cities are within standard working hours (9 AM – 5 PM). This gives you the maximum overlap window for real-time collaboration.
How do I convert NPT to IRST?
NPT (NPT) is the timezone for Kathmandu, Nepal (UTC+5:45). IRST (IRST/IRDT) is the timezone for Tehran, Iran (UTC+3:30). Kathmandu is 2 hours and 15 minutes ahead of Tehran. Quick examples: 9 AM NPT = 6:45 AM IRST, 12 PM NPT = 9:45 AM IRST, 3 PM NPT = 12:45 PM IRST, 6 PM NPT = 3:45 PM IRST.
Is Kathmandu ahead of or behind Tehran?
Kathmandu is 2 hours 15 minutes ahead of Tehran. When it's noon in Kathmandu, it's 9:45 AM in Tehran.
Does Kathmandu or Tehran change clocks for Daylight Saving Time?
No, Kathmandu does not observe DST — it stays on NPT year-round. Tehran observes DST and switches between IRST/IRDT. Because only one city observes DST, the time difference shifts by 1 hour during transition periods (typically March/April and October/November).
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