September 17 is important because it was the day the first microchip was tested.
It is St. Patrick's Day, Ireland's national holiday, and is celebrated by Irish people and many other people around the world.
he gave his speech that day
The Constitution was signed at Independence Hall on September 17, 1787. But the signatures that are even more important are those given by the states as it was being considered for ratification.
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September 17 1949 was a Saturday.
17 September 2012 will be a Monday.
September 17, 2003 was a Wednesday
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17 September 1979 was a Monday.
17 September 1995 was a Sunday.
September 17 1977 was a Saturday.
September 17 1970 was a Thursday.