What happens on or around June 21?

summer solstice. Longest day of the year (in the northern hemisphere) Inmost places in the northern hemisphere the longest day of the year is not in fact 21st June. As June ends the sun continues to...

it is the longest day of the year in the northern hemisphere but its the shortest in the southern

Around that time, earth's north pole is tilted toward the sun. This is also around the time that the earth is farthest from the sun.

Flies in the family Pyrgotidae are endoparasitoids of these and related beetles. The female flies pursue the beetles in flight, laying an egg on the beetle's back under the elytra where the beetle...

the season it is in the southern hemisphere is winter because in the northern hemisphere in June 21 in is summer so it is the opposite.