How many hours is EST behind NPT?
As abbreviations, NPT is always 10.75 hours ahead of EST: EST is UTC−5 and NPT is UTC+5:45. To convert, add 10.75 hours.
Check which label you actually need: EST (Eastern Time is on EDT today). A time written with an abbreviation that is not in use is usually meant as the local time, so convert between the places instead: right now NPT is 9.75 hours ahead of EST.
When the EST to NPT time difference changes
For most of the year NPT is 9.75 hours ahead of EST. From 1 November to 31 December 2026, NPT is 10.75 hours ahead of EST instead, because the two places change their clocks on different dates. Meetings booked by the usual gap land an hour off in those weeks.
| Dates | NPT vs EST | Length |
|---|---|---|
| 8 March 2026 to 31 October 2026 | 9.75 hours ahead | 238 days |
| 1 November 2026 to 31 December 2026 | 10.75 hours ahead | 61 days |
| 1 January 2027 to 13 March 2027 | 10.75 hours ahead | 72 days |
| 14 March 2027 to 6 November 2027 | 9.75 hours ahead | 238 days |
| 7 November 2027 to 31 December 2027 | 10.75 hours ahead | 55 days |
Best time for a meeting between EST and NPT
- When NPT is 9.75 hours ahead of EST: no shared 09:00 to 17:00 hours; try 08:00 in EST (17:45 in NPT).
- When NPT is 10.75 hours ahead of EST: no shared 09:00 to 17:00 hours; try 07:00 in EST (17:45 in NPT).