Bitcoin has three major holidays:
Creation Day October 31st
On October 31, 2008, Satoshi Nakamoto published the white paper "Bitcoin: A Peer-to-Peer Electronic Cash System."
Holiday Custom: Re-read the white paper 🔖
Genesis Day January 3rd
On January 3, 2009, the first block of the Bitcoin blockchain was mined, officially launching the Bitcoin network.
Holiday Custom: Mock that former British Prime Minister 🤦
Pizza Day May 22nd
A user on the BBT forum, Laszlo, used 10,000 bitcoins to buy two pizzas, marking the first documented use of Bitcoin as a real-world payment medium.
Holiday Custom: Eat two slices of pizza! 🍕