What is the oldest holiday?

its Thanksgiving Day

^ Actually, it's Christmas. People have been celebrating Christmas for over 4,000 years, since Jesus Christ was born.

No Jesus was only born 2,000 years ago. The oldest holiday is passover. It's been celebrated for 3,500 years.

^ No, Actually, it's Halloween, or Samhain (pronounced "Sow-In"). Originally an Irish Gaelic Festival first started around 6,000 years ago. It marked the end of the Harvest Season and the beginning of Winter.