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October 21 is the 294th day of the year (295th in leap years) in the Gregorian calendar. There are 71 days remaining until the end of the year.

January 21 is the 21st day of the year in the Gregorian calendar. There are 344 days remaining until the end of the year (345 in leap years).

December 21 is the 355th day of the year (356th in leap years) in the Gregorian calendar. There are 10 days remaining until the end of the year. This is a frequent day for the winter solstice to occur in the northern hemisphere and summer solstice to occur in the southern hemisphere.

November 21 is the 325th day of the year (326th in leap years) in the Gregorian calendar. There are 40 days remaining until the end of the year.

February 21 is the 52nd day of the year in the Gregorian calendar. There are 313 days remaining until the end of the year (314 in leap years).

Columbia Pictures' action/adventure 21 is inspired by the true story of the very brightest young minds in the country – and how they took Vegas for millions.Ben Campbell (Jim Sturgess) is a shy, brilliant M.I.T. student who – needing to pay school tuition – finds the answers in the cards.  He is recruited to join a group of the school’s most gifted students that heads to Vegas every weekend armed with fake identities and the know how to turn the odds at blackjack in their favor.  With

Down syndrome, or Down's syndrome (primarily in the United Kingdom), trisomy 21, or trisomy G, is a chromosomal disorder caused by the presence of all or part of an extra 21st chromosome. It is named after John Langdon Down, the British physician who described the syndrome in 1866. The disorder was identified as a chromosome 21 trisomy by Jérôme Lejeune in 1959. The condition is characterized by a combination of major and minor differences in structure. Often Down syndrome is associated with

April 21 is the 111th day of the year (112th in leap years) in the Gregorian calendar. There are 254 days remaining until the end of the year.

March 21 is the 80th day of the year (81st in leap years) in the Gregorian calendar. There are 285 days remaining until the end of the year. March 21st is the common date of the March equinox (although astronomically the equinox is more likely to fall on March 20 in all but the most easterly longitudes). In astrology, the day of the equinox is the first full day of the sign of Aries. It is also the traditional first day of the astrological year.