Summer Solstice: 21st June:
21st June is the longest day in the Northern Hemisphere, technically this day is referred to as Summer solstice. In Delhi, the day length is around 14 hours.
- The amount of light received by a specific area in the Northern Hemisphere during the summer solstice depends on the latitudinal location of the place.
- 21st June is also observed as the International Yoga Day.
About Summer Solstice:
- It is the longest day and shortest night of the year in the Northern Hemisphere.
- During this, countries in the Northern Hemisphere are nearest to the Sun and the Sun shines overhead on the Tropic of Cancer (23.5° North).
- At latitudes of 23.5° are the Tropics of Cancer and Capricorn, north and south of the Equator.
- At 66.5° are the Arctic and Antarctic Circles, to the north and south.
- Latitudes are a measure of a location’s distance from the Equator.
- During the solstice, the Earth’s axis — around which the planet spins, completing one turn each day — is tilted in a way that the North Pole is tipped towards the sun and the South Pole is away from it.
- Typically, this imaginary axis passes right through the middle of the Earth from top to bottom and is always tilted at 23.5 degrees with respect to the sun.
- At the Arctic Circle, the sun never sets during the solstice.