Bitcoin Holiday Calendar
January
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03
Bitcoin's birthday!Bitcoin Holiday
Proof of Keys DayBitcoin Holiday
08
Lightning Pay Day
January 8th, 2018
On this day in 2018, the first real purchase over the Lightning Network was sent for a TorGuard VPN subscription.
Bitcoin Holiday
11
Genesis Transaction Day
January 11th, 2009
On this day in 2009, the first transaction ever broadcast over the Bitcoin network was sent by Satoshi Nakamoto to Hal Finney.

View the genesis transaction here.
Bitcoin Holiday
14
Lightning Whitepaper Day
January 14th, 2016
Official release of the Lightning Network whitepaper by Joseph Poon and Thaddeus Dryja. The whitepaper proposes scalable off-chain instant payments using a decentralized system, whereby transactions are sent over a network of micropayment channels whose transfer of value occurs off-blockchain.

Read the Lightning Network whitepaper here.
Bitcoin Holiday
19
Lightning Network Torch
January 19th, 2019
Pseudonymous Twitter user hodlonaut began a game-like promotional test of the Lightning Network by sending 100,000 satoshis (0.001 bitcoin) to a trusted recipient where each recipient added 10,000 satoshis ($0.34 at the time) to send to the next trusted recipient. The "lightning torch" payment reached notable personalities including Twitter CEO Jack Dorsey, Litecoin Creator Charlie Lee, Lightning Labs CEO Elizabeth Stark, and Binance CEO "CZ" Changpeng Zhao, among others. The tweet that started the lightning torch.
Bitcoin Holiday
27
Silk Road Day
January 27th, 2011
The day that the Silk Road marketplace went online. A proof of concept for Bitcoin’s independence, censorship resistance, and pseudonymity, the Silk Road was an online black market and the first modern darknet market.