FF12a

What do you call the first day of May around here?

MAY DAY880
NR101
MAY BASKET DAY8
FIRST DAY OF MAY6
LAW DAY6
MAY FIRST6
LOYALTY DAY4
NH3
ARBOR DAY2
DECORATION DAY2
LEI DAY2
NIGHT OF MAY FIRST2
AMERICANIZATION DAY1
DADDY’S BIRTHDAY1
END OF MAY1
FIRST DAY OF SPRING1
FLOWER DAY1
HEALTH DAY1
MAY BEE1
MAY FLOWER DAY1
MAY TENTH1
MAYPOLE DANCES1
MAYPOLE DAY1
MITCHELL DAY1
MORNING OF MAY FIRST1
MY BIRTHDAY1
RED DAY1
SNAIL DAY1
STRAW-HAT DAY1