266 days.
Straddling the years 2011 and 2012, there are 35 Mondays between these two dates.
From February 25, 2012 to June 23, 2012 is 17 weeks, so there are 16 full weeks between the dates.
Kickin' It - 2011 Wasabi Warriors 1-1 was released on: USA: 13 June 2011 USA: 13 June 2011 Canada: 27 June 2011 Germany: 24 February 2012 Japan: 25 February 2012
Shameless - 2011 Killer Carl - 1.6 was released on: USA: 13 February 2011 Spain: 25 June 2011 Japan: 9 February 2012 Germany: 27 February 2012 Hungary: 11 April 2012
12 months
Shameless - 2011 Three Boys 1-5 was released on: USA: 6 February 2011 Spain: 11 June 2011 Japan: 2 February 2012 Germany: 20 February 2012 Hungary: 4 April 2012
Shameless - 2011 Killer Carl 1-6 was released on: USA: 13 February 2011 Spain: 25 June 2011 Japan: 9 February 2012 Germany: 27 February 2012 Hungary: 11 April 2012
Being Human - 2011 I Want You Back From the Dead 1-9 was released on: Canada: 14 March 2011 USA: 14 March 2011 Czech Republic: 7 June 2011 Hungary: 7 June 2011 Spain: 16 June 2011 Turkey: 20 November 2011 Belgium: 1 February 2012 (limited) Netherlands: 1 February 2012 (limited) Austria: 1 March 2012
Pan Am - 2011 1964 1-14 was released on: Canada: 19 February 2012 USA: 19 February 2012 UK: 25 February 2012 Netherlands: 5 March 2012 Spain: 10 March 2012 Hungary: 20 May 2012 Japan: 18 June 2012
19 weeks and 5 days.
The Good Wife - 2009 Foreign Affairs 2-20 was released on: USA: 12 April 2011 Spain: 2 June 2011 Hungary: 20 June 2011 Germany: 29 July 2011 Finland: 9 January 2012 Italy: 7 February 2012 Japan: 24 February 2012
Pan Am - 2011 Diplomatic Relations 1-11 was released on: Canada: 15 January 2012 USA: 15 January 2012 UK: 4 February 2012 Spain: 18 February 2012 Netherlands: 27 February 2012 Hungary: 6 May 2012 Japan: 4 June 2012