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The Summer Solstice, which is the longest day of the year, generally occurs on June 21 each year, but this can vary a day either way depending on the cycle of leap years. (This is actually the SHORTEST day of the year in the Southern Hemisphere.)
The reason is that the Earth spins on its axis, and the Earth also orbits the Sun. The orbital plane of the Earth's orbit is called the "ecliptic", and if the Earth's axis of rotation were "normal to" (meaning, at a 90 degree angle to) the ecliptic, then the Sun would always be over the equator and we would have no seasons - and the days and nights would always be 12 hours long.
But the axis of the Earth's rotation isn't normal to the ecliptic; it is tilted at about 23.4 degrees. This "axial tilt" gives us our seasons. On June 21, the northern hemisphere of the Earth is tilted toward the Sun, as close as it ever does; the next day, as the Earth orbits the Sun, it starts to move a bit away.
Wiki User
∙ 10y ago
Wiki User
∙ 9y agoIn the northern hemisphere it is June 21st. In the southern hemisphere it is December 21st.
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What are the winter and summer solstices?
June 21st and December 21st, the shortest and longest nights of the year.
What day is the longest day in summer?
June 21st It's called the Summer Solstice Although you could argue that in the polar regions days can last for 6 months and are then followed by 6 months of night
What day was the summer solstice on in 1979?
The same day it is every year: June 21st
What are the names of the two equinoxes?
An equinox in astronomy is the moment in time when the centre of the sun can be observed to be directly above the Earths equator, occurring around March 20th and September 23rd each year.
What is the longest daylight day of the year in the US?
It's commonly referred to as "Mid-Summers Night Eve" or "The Summer Solstice" and it usually happens on or around the 21st of June. This is the longest day and the shortest night of the year. From this day on the days get shorter and the nights longer until the Winter Solstice which is the other way around; the shortest day and the longest night of the year after which the days start getting longer and nights shorter.
What is the day 21st June and 22nd December calls?
21st June is the longest day of the year and 22nd December is the shortest day of the year.
What is the date of the longest day of the year in the Northern Himisphere?
the 21st of june
What is the date of the longest day of the year in the southern hemisphere?
21st June
When is the longest day of the year of 2011?
The longest day in any year is the summer solstice. In 2011, this will occur on June 21 in the Northern hemisphere and December 22 in the Southern hemisphere.
When does the longest day happen?
The longest day of the year, also known as the summer solstice, occurs around June 21st in the Northern Hemisphere. It is when the North Pole is tilted closest to the sun, resulting in the longest period of daylight for that hemisphere.
When is the longest day of the year in new jersey?
June 21st - summer solstice
What are the winter and summer solstices?
June 21st and December 21st, the shortest and longest nights of the year.
What day is the longest day in Connecticut?
The summer solstice is the longest day in Connecticut. The solstice usually falls on either the 20th or 21st of June. This year (2011) it falls on the 21st.
How many hours are there in the longest day of the year of 2011?
June 21st in the northern hemisphere - December 21st in the southern.
What is the importance of June 21?
21st June is the longest day of the year and shortest night in INDIA ONLY. 21st day June is somehow also important because 22nd June is my birthday !
What date is the longest date?
21st June is the longest day out of a.21st march b.21st June c.21st September d.21st December answer = b
Does the South Pole receive the Longest period of daylight on June 21st?
No on June 21st it is the longest day in the NORTH and shortest day in the SOUTH.
