21 June : Secret of the Longest day

Today we are nearest to the sun. Just look at the calendar around. It is the time to welcome some extra sunshine with open arms.

June 21 is known to be the longest day of the year. Although most places do not see the earliest sunrise of the year on this day. The earliest sunrise happens a few days before, and the latest sunset takes place a few days after, the June Solstice.

Actually, the Solstice varies for different parts of the world but at least for India, June 21 is the Summer Solistice, according to the local time zone.

Also, the hottest day of the year in the Northern Hemisphere usually comes a few weeks or sometimes months after the Solstice. This is because it takes time for the oceans and landmasses to warm up, which again allows for higher air temperatures. This phenomenon is called the delay or lag of the seasons.

Solstice comes from the Latin words sol, meaning Sun and sistere, meaning to come to a stop or stand still.

On the day of the June Solstice, the Sun reaches its northernmost position, as seen from the Earth. It stands still at the Tropic of Cancer. It then reverses its direction and starts moving south again.

Astronomers and scientists use the date of the June Solstice to mark the beginning of summer in the Northern Hemisphere and winter in the Southern Hemisphere.

आज इस वर्ष का सबसे लंबा दिन है। आज summer solstice है यानी वो दिन जब धरती का झुकाव सूर्य की तरफ सबसे ज्यादा होता है । उत्तरी गोलार्ध यानी Northern Hemisphere में ये दिन summer solstice के तौर पर मनाया जाता है और Southern Hemisphere यानी दक्षिणी गोलार्ध में ये दिन winter solstice के तौर पर मनाया जाता है । winter solstice के दौरान दिन की अवधि छोटी और रात लंबी हो जाती है।