September 13 is the 256th day of the year (257th in leap years). There are 109 days remaining in the year.

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  • During the 1970s science fiction TV series Space: 1999, September 13th, 1999 was the day when the Moon broke away its orbit around the Earth and began its voyage across the Universe, taking the inhabitants of Moon Base Alpha with it.
In the television series 'Sliders', the Mallory character inventing sliding (travel between alternate realities) on September 13.

September 12 · September 14 · August 13 · October 13 · more historical anniversaries

See Also: January, February, March, April, May, June, July, August, September, October, November, December - more historical anniversaries