24 hours
On average, there are 12 hours of darkness in a 24-hour day. This is because the Earth rotates on its axis, causing half of the planet to be in darkness while the other half is in daylight. The length of darkness can vary depending on the time of year and the location on Earth.
On June 21 the arctic day lasts for 6 months. Its the same for December 21.
The season 2 premiere was on June 21st, 2015.
British Summertime begins on the last Sunday of March and ends on the last Sunday of October each year.
im sure that it was the battle of Okinawa which ended in June 21st 1945
St. Petersburg, Russia experiences the phenomenon of "White Nights" in June and July due to its high latitude. During this time, the sun only dips below the horizon briefly, keeping the sky bright throughout the night. This unique phenomenon occurs because St. Petersburg is located near the Arctic Circle, where the sun does not fully set during the summer months.
Actually 20th or 21st June is Winter Solstice, the official start of winter is 1st June. The last day of Winter is 31st August.
Exactly on the Arctic Circle, the sun stays up for 24 hours on June 21, and down for 24 hours on December 21.As you go further north from the Arctic Circle, the 'up' time in Summer increases, and the 'down' time in Winter increases.The farthest north you can go is the north pole. As seen from the pole, the sun is up for 6 months solid,from March 21 to September 21, and down for the other 6 months.
President's Day can never fall on June 22 because it always occurs on the third Sunday in June. The third Sunday of a month cannot be any later than the 21st.
The longest day in summer, known as the summer solstice, generally falls on June 21st in the Northern Hemisphere and December 21st in the Southern Hemisphere. On this day, the sun reaches its highest point in the sky, resulting in the longest period of daylight of the year.
In 2007 March 21st was a Wednesday.