Poll: May Holiday Meal(s)

I see that there are several likely holidays for a MAY write-up:

• May Day


• Cinco de Mayo


• Mother's Day


• Armed Forces Day


• Memorial Day

Beyond the typical US holidays, there are holidays around the world, including a Flag Day in Poland and Labor Day in several countries.
http://www.earthcalendar.net/_php/DateSearch.php

I've never done big celebration meals for any of these, but in keeping with the spirit of this blog, I plan to do at least one.

So, which one/ones should I make holiday meals for in May? Your suggestions will be taken for the next week or so. Send your suggestion in the comments section.