December 22 is the winter solstice, the shortest day, of the year for Pakistan and other Asian countries.
According to the Meteorological Department, December 22 would be recorded the shortest day with 11 hours and 20 minutes of daylight and 12 hours and 40 minutes of night. It is a time when the sun reaches its farthest point from the celestial equator.
As the first day of the astronomical winter in the Northern Hemisphere, the solstice marks the time at which the sun shines directly overhead at 23.5 degrees south latitude. With the North Pole tilted away from the sun, locations north of the equator see the sun take its lowest and shortest path across the southern sky.
The department also said that the duration of daylight would be increasing gradually from December 23.