First Day Of Summer 2010 USA?

When is the first day of summer in 2010 in the USA?
I know that the first day of summer is a different day for the northern hemisphere and the southern hemisphere. My cousin lives in Australia and when we are in summer time, they are in winter.

The same thing happens when they start spring, we start the fall season.
So I supposed the first day of summer in 2010 for the USA must be the first day of winter for the other side of the world.
Anyway, what is the date of the first day of summer in America in 2010?

asked by Charles in Geography | 3332 views | 06-20-2010 at 05:29 PM

In the United States and the rest of the northern hemisphere, the first day of the summer season is the day of the year when the Sun is farthest north (on June 20th or 21st 2010). This day is known as the Summer Solstice. The last day of summer and the first of Autumn is September 21 in the northern hemisphere, when the day and the night are approximately the same length.

A common misconception is that the earth is further from the sun in winter than in summer. Actually, the Earth is closest to the sun in December which is winter in the Northern hemisphere.

The first day of summer 2010 is the longest day of the year, respectively, in the sense that the length of time elapsed between sunrise and sunset on this day is a maximum for the year.

For the years 2009 and 2013, people in the Mountain and Pacific time zones and farther west greet the first day of summer a day earlier, on June 20. So when people ask what the first day of summer is, it not only depends on the year but on where you live.

It happens fairly regularly that the first day of summer is on or near Fatherís Day. As it happens, Fatherís Day is always celebrated on the third Sunday of June, which is always close to the summer solstice. This is a good opportunity to do something for Dad with a summer theme. Get your siblings together and pool your extra cash into buying a new barbecue grill or something along those lines.

You should always remember that summer begins with the summer solstice, usually around June 21, fall starts with the autumnal equinox, usually around September 21.

answered by Carter | 06-20-2010 at 05:42 PM

The reason we have the summer solstice is today the North Pole is closer to the sun than it is on any other day of the year of 2010. Today is the Southern Hemisphereís winter solstice, which is their shortest day of the year. Neat how that works.

answered by Meredith | 06-21-2010 at 04:30 PM

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