Asked in Seasons
When is last day of summer 2009 in the us?
September 04, 2009 11:05AM
It depends on what you're referring to - the dates of the astronomical seasons are the same everywhere on the Earth (except for the difference between the northern and southern hemispheres), because astronomical seasons are based on the position of the Earth in its orbit around the Sun. for example, the last day of summer in Illinois (and the rest of the northern hemisphere) is September 22.
You might also be talking about Labor Day, which is the traditional end of summer for a lot of businesses, pools, etc, because it's the last big summer family holiday. Labor Day is September 7 this year (all over the US).