In mid to late May of 2015 and 2014, you said your companion cert was expiring in a few days. So maybe the end of May?
http://www.flyertalk.com/forum/alask...need-book.html
http://www.flyertalk.com/forum/alask...n-what-do.html
Although, in this thread you said your anniversary date was February:
http://www.flyertalk.com/forum/alask...n-tickets.html