The dates for this year's nationwide National Moth Week will be July 20-28, 2013. At the time of this writing, there are several so-called private events in Colorado. The number and locations of events (including public) should increase in the coming months. It is hoped that there will be at least one public moth observing site for the Fort Collins - Loveland area, especially on the weekend of May 20-21.
http://nationalmothweek.org/