Months are not a fixed number of days, but March 7, 2010 was 8 months and 20 days after June 15, 2009.
The calculation uses "full months" of various lengths, ending with the 8th full month on February 15, 2010. From there, you have 13 days more in February and 7 in March.
The actual number of days not including the starting day is 264 days.
21 months.
Mugen kouro - 2009 VG was released on: Japan: 11 June 2009 USA: 16 March 2010 UK: 27 March 2010
41 weeks.
The approximate date of conception was June 23 2009.
The Phantom - 2009 was released on: Canada: 20 December 2009 Italy: 28 January 2010 Hungary: 20 March 2010 USA: 20 June 2010
The Listener - 2009 Some Kinda Love 1-4 was released on: Israel: 22 March 2009 Germany: 24 March 2009 UK: 29 March 2009 Netherlands: 10 May 2009 Japan: 3 June 2009 Canada: 18 June 2009 USA: 18 June 2009 Hungary: 8 July 2010 Finland: 27 June 2012
The Listener - 2009 A Voice in the Dark 1-3 was released on: Israel: 15 March 2009 Germany: 17 March 2009 Peru: 17 March 2009 UK: 22 March 2009 Netherlands: 3 May 2009 Japan: 27 May 2009 Canada: 11 June 2009 USA: 11 June 2009 Hungary: 1 July 2010 Finland: 20 June 2012
The approximate date of conception was June 8th 2009.
15th June 2009? Your due date would be roughly Monday March 8th 2010
Dollhouse - 2009 Stage Fright 1-3 was released on: USA: 27 February 2009 UK: 2 June 2009 Australia: 23 June 2009 Hungary: 18 January 2010 Finland: 31 March 2010 Japan: 28 April 2010 Sweden: 8 June 2011
Lie to Me - 2009 Beat the Devil 2-11 was released on: Canada: 7 June 2010 USA: 7 June 2010 Australia: 9 June 2010 UK: 10 June 2010 Germany: 24 November 2010 Japan: 18 March 2011 (DVD premiere) Hungary: 20 June 2011
That March - 2009 was released on: USA: June 2009