Equinox Day: A Balance of Day and Night in Pakistan

On September 22, the world experiences a remarkable event known as the equinox, a day when day and night are equal in duration. This phenomenon occurs twice a year, with the other date being March 22. During these times, both day and night last for approximately 12 hours, creating a unique balance that many people around the globe, including those in Pakistan, can observe.

Astronomers explain that the equinox happens because the sun crosses the equator. On March 22, the sun moves from the Tropic of Capricorn in the Southern Hemisphere to the Tropic of Cancer in the Northern Hemisphere. This transition results in equal lengths of day and night. Similarly, on September 22, the sun is directly over the equator, once again achieving this balance.

The equator itself is an imaginary line that divides the Earth into two equal halves, playing a crucial role in this natural event. It is fascinating to think about how this simple line can influence the way we experience day and night.

In Lahore, the weather on this equinox day is expected to be hot and dry. The city is currently facing significant challenges with pollution, ranking first globally for its pollution levels. According to the Meteorological Department, temperatures are predicted to range between 27 and 38 degrees Celsius, with no rain in sight. The humidity is high, recorded at over 74%, and wind speeds are relatively low at 8 kilometers per hour. This combination of factors contributes to the ongoing issue of severe smog, with Lahore maintaining an average pollution index of 190.

As we reflect on the equinox, it serves as a reminder of the natural rhythms that govern our planet. While we enjoy the balance of day and night, it is also essential to consider the environmental challenges we face, particularly in urban areas like Lahore. The equinox not only marks a change in seasons but also encourages us to think about our impact on the environment and the importance of taking steps towards a cleaner, healthier future.