Today - 1952 2005-06-21 was released on: USA: 21 June 2005
21 June - Winter solstace
it starts on June 21
Well, summer generally starts June 21, and never begins more than 2 days away from this date; but regardless of that, Autumn begins approximately Sep 21.
Today - 1952 2007-03-21 was released on: USA: 21 March 2007
To be better said 1777 - 1778 September 11, 1777 - June 28, 1778
July 21, 1778 was a Tuesday.
Born June 25 1990 would make you 21 today.
Today - 1952 - 1989-06-21 was released on: USA: 21 June 1989
Today - 1952 - 2011-06-21 was released on: USA: 21 June 2011
Today - 1952 2007-06-21 was released on: USA: 21 June 2007
Today - 1952 2006-06-21 was released on: USA: 21 June 2006
Today - 1952 2005-06-21 was released on: USA: 21 June 2005
Today - 1952 2013-06-21 was released on: USA: 21 June 2013
Today - 1952 2004-06-21 was released on: USA: 21 June 2004
The calculation would be Current Year - 21 = Birth Year. To be 21 today, you have to be born on or before today's date of that year. Example: Today is June 27, 2007. 2007 - 21 = 1986. You are at least 21 years old today if you were born on or before June 27, 1986.
Between December 21, 2009 and June 21, 2010 there are 183 days inclusive.