Happy first day of May!
As a child I was only taught about 1 meaning of this day– it’s the day when you traditionally leave baskets of flowers on the doorsteps of your friends and neighbors.
(When I ended up living in a queer nerdy poly commune-ish household in Los Angeles, my roommates were not familiar with the tradition… they stressed the importance of the “workers’ rights” meaning of the day, and all agreed that “the rich neighbor’s money” would be a better thing to distribute in those baskets.)
I am not sure where the third meaning of Mayday (“aircraft in distress”) fits into all this but probably the workers at Boeing would have something to say about it.