As winter deepens in Pakistan, the country observes the winter solstice today, marking the longest night of the year.
A spokesperson from the Space and Upper Atmosphere Research Commission (Suparco) confirmed that this is the longest night for the Northern Hemisphere, including Pakistan.
The winter solstice, which occurs annually on December 21 or 22, depending on the region, marks the shortest daylight hours and the longest night when the Northern Hemisphere is tilted furthest away from the sun. This celestial event leads to shorter days and extended nights across the hemisphere, Pakistan included.
Suparco highlighted that the solstice underscores Earth’s orbital movement and axial tilt, both crucial factors in seasonal variations.
Following the solstice, daylight hours will gradually extend. Within two months, an additional hour of sunlight is expected, positively influencing daily routines and activities, the statement added.
This astronomical phenomenon serves as a testament to Earth’s dynamic interaction with the sun, shaping natural and human life.
But why does the longest night occur on this specific day? The answer lies in Earth’s tilt, with the Northern Hemisphere angled furthest away from the sun, as explained by Al Jazeera.
Daylight durations vary across countries in the hemisphere. For instance, London is expected to experience only seven hours and 49 minutes of daylight—more than eight hours shorter than its longest day.
From the day after the solstice, daylight begins to lengthen across the Northern Hemisphere, culminating in the summer solstice, the longest day of the year, between June 20 and 22.
The winter solstice also carries cultural significance worldwide. Historically, it symbolized rebirth and renewal, with many ancient civilizations attributing supernatural or folkloric meaning to this day.
