The timezone TJT in Tajikistan

Timezones are always computed by their difference to UTC, the "Universal Time Coordinated". In Tajikistan exists only a single tonezone at UTC+5. E.g. New York is currently at UTC-5 in Eastern Time, so the time difference between New York and Tajikistan is 10 hours.
Tajikistan has no time difference between summer and winter. A daylight saving time doesn't exist.
Back to overview: Tajikistan

Only 1 nationwide time zone

Standard time:Tajikistan Time (TJT)
Daylight saving time:discontinued 1991

Tajikistan has an east-west extension of 6.4 degrees of longitude. Given the country's location in Central Asia, this corresponds to about 550 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 25 minutes. This means the sun rises and sets 25 minutes later in the west than in the east.

No more daylight saving time in Tajikistan

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 its distance from the equator, the impact would be significant in Tajikistan. Dushanbe is located 4,300 km from the equator. A day in midsummer would then not last from 04:59 to 19:54, but from 05:59 to 20:54. Nevertheless, in 1991 it was decided to finally abandon daylight saving time in Tajikistan.

Changes in Daylight Saving Times

In Tajikistan Daylight Saving Time has been observed since 1981 until 09/09/1991.
Tajikistan: Sunrise + sunsetTimes for sunrise and sunset in TajikistanTimes of sunrise and sunset for the most important cities in Tajikistan 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.
Netherlands: Public HolidaysPublic holidays in the Netherlands 2022-2026Statutory and inofficial holidays in the Netherlands for 2022 to 2026