The timezone NPT in Nepal

Timezones are always computed by their difference to UTC, the "Universal Time Coordinated". In Nepal exists only a single tonezone at UTC+5.75. E.g. New York is currently at UTC-5 in Eastern Time, so the time difference between New York and Nepal is 11 hours.
Nepal has no time difference between summer and winter. A daylight saving time doesn't exist.
Back to overview: Nepal

Only 1 nationwide time zone

Standard time:Nepal Time (NPT)
Daylight saving time:none

Nepal has an east-west extension of 7.8 degrees of longitude. Given the country's location in South Asia, this corresponds to about 760 kilometers. With this still relatively small extension, the course of the sun is only slightly different at different positions in the country. The position of the sun in the west of the country differs from that in the east by only about 31 minutes. This means the sun rises and sets 31 minutes later in the west than in the east.

No daylight saving time in Nepal

Due to the sun's orbit around the equator, the days are longer in summer (June to September in the northern hemisphere). Countries that switch to daylight saving time in the summer months align the daylight phase with the human rhythm. Unused bright morning hours are thus shifted into the evening (more information on daylight saving time here).
Due to the relative proximity to the equator, the impact in Nepal is not particularly large. Kathmandu is only 3,100 km from the equator. A day in midsummer would then not last from 05:07 to 19:03, but from 06:07 to 20:03. The effect would be quite noticeable in the evening, but the sun rising later in the morning falls at a time when many people are already awake. Thus, daylight saving time was never introduced in Nepal.
Nepal: Sunrise + sunsetTimes for sunrise and sunset in NepalTimes of sunrise and sunset for the most important cities in Nepal and the avg. length of daylight per month
Countries with DSTAll Countries with DSTA summary of all countries that currently observe Daylight Saving Time with further info on introductions and upcoming changes.
United States of America: EarthquakeRecent earthquakes and their magnitudes in the United StatesEarthquakes and their intensities in the United States of America