@PlayerSinger2010 It's the first of May. Traditionally a fertility festival in most of Europe, with singing, dancing, drinking, and food. It usually has a floral aesthetic.
The May Pole, and it's dance, are the central focus of the festivities. The dance is about pairing up young couples, some of whom would marry a few weeks later.
May Day is the opposite of Halloween on the calendar, and in the cycle of seasonal festivities. They also oppose in meaning, May Day is about life entering the world, while Halloween is about life exiting it. May Day is about planting and growth, while Halloween is about harvest and death.