EVERYDAY SCIENCE

Detailed explanation-1: -The Longest Day (Summer Solstice) is observed on either June 20, 21, or 22, but this year, it falls on June 21. The timing shifts because it depends on when the Sun reaches its northernmost point from the celestial equator.

Detailed explanation-2: -In tropical areas, the longest day is just a little longer than 12 hours; in the temperate zone, it is significantly longer; and places within the Arctic Circle experience Midnight Sun or polar day, when the Sun does not set at night.

Detailed explanation-3: -Summer solstice (June 20 or 21): longest day of the year, marking the start of summer. Autumnal equinox(about September 23): day and night of equal length, marking the start of autumn. Winter solstice (December 21 or 22): shortest day of the year, marking the start of winter.

Detailed explanation-4: -The summer solstice occurs in June in the Northern Hemisphere and marks midsummer: the ‘longest day’ and ‘shortest night’ of the year.

Detailed explanation-5: -The summer solstice occurs at the moment the earth’s tilt toward the sun is at a maximum. Therefore, on the day of the summer solstice, the sun appears at its highest elevation with a noontime position that changes very little for several days before and after the summer solstice.