Including the start and end dates in the calculation, there are 312 days between the two dates.
Roughly Wednesday April 20th 2011
Late August 2011 for Beta testers and April 2012 for non-Beta testers. Pottermore was supposed to open in October 2011. However they decided to extend the beta period to make improvements to the website and the site opened on the 14th of April 2012.
Sunday 8th of July 2012 to Saturday 14th of July 2012.
between the 14th and 20th of July 2008 in sydney
14th July 2011
26
Pottermore was in beta from July 2011 until April 2012. During this time nobody could register for the site. It opened on 14th April 2012.
20th July 2012
From the day this is being answered, the 20th of July 2013, it is 359 days to the 14th of July 2014.
3D: Midnight, 13th July 2011. Normal: Midnight, 14th July, 2011 I think...
July 14th-15th
yes they just did on the 14th of July, 2011