I'll make this post short and sweet: 

List Of National Awareness Months

What can you do with this list, in your efforts to publicize your own business/product/service? Pick a charity to promote and donate a percentage of your profits to that charity, during that charity's National Awareness Month – breast cancer awareness, Type 1 Diabetes Awareness, etc. 

And of course, send out press releases about it, to solicit more donations and drive more sales. 

Or – just post a link to a different "awareness month" cause on your site every month, with a donation button for the cause, for good Karma and community goodwill. 

And here's a second list, with a sense of humor:

http://aware.easilyamused.org/ 

 

 And here's another one:

 

U.K. List of Festivals and National Awareness Months