91 days in total
There were 89 days between the 22nd of March 2011 and the 19th of June 2011.
90 days after March 13, 2011 would be June 11, 2011.
Adding 90 days to March 29, 2011 gives June 27, 2011.
100 days before June 24th 2011 will be Wednesday, March 16, 2011.
Adding 100 days to March 18, 2011 gives June 26, 2011.
Subtracting 272 days from March 29, 2011 gives June 30, 2010.
283 days
The 24th of March 2011 is 90 days before it and the 20th of September 2011 is 90 days after it.
Subtracting 1000 days from March 3, 2011 gives June 6, 2008.
269 days.
72
Subtracting 276 days from March 24, 2012 gives June 22, 2011.