After 12 months you may post an accepted version of your article on your home page, university page etc. Here is a summary of the Wiley embargo policy: http://eu.wiley.com/WileyCDA/Section/id-814163.html
There is a 24 hour-minimum embargo on all unpublished articles. Essentially, this means that once Wiley has released the article to the media for the purpose of compiling press releases, they are then not permitted to release these press releases until 00:01 on the day which the article appears live on Wiley Online Library.
You can read more on the embargo in our Ecxlusive Licence Form: