Our Ancestors celebrated May Day, the first day of May, because it was welcomed as the beginning of summer. It is celebrated with flowers and ribbons and dancing. The day was popular festival to signal that fields had been ploughed and the seeding was complete.
The celebration was to bring forth the Gods/Goddesses to bless the seeding and thereby ensure a great harvest. For some Ancestors, May 1 was a celebration of fertility, and this was a popular day to court and confirm your love to the man or the woman who held your heart.
In today's world, May Day is just another day. You can make it special by going out into Nature to find places to be at peace with yourself.