Wikipedia:Selected anniversaries/January 5
January 5: Twelfth Night (Western Christianity).
- 1477 – Burgundian Wars: Charles the Bold (pictured), the Duke of Burgundy, died at the Battle of Nancy, eventually leading to the partition of Burgundy between France and the House of Habsburg.
- 1527 – Felix Manz, co-founder of the original Swiss Brethren Anabaptist congregation in Zürich, was executed by drowning, becoming one of the first martyrs of the Radical Reformation.
- 1968 – The Prague Spring: Alexander Dubček came to power in Czechoslovakia, beginning a political reform known as "Socialism with a human face" that introduced a period of political liberalization that still enabled the Communist Party to maintain real power.
- 2005 – Eris, the largest known dwarf planet in the Solar System, was discovered by a team led by Michael E. Brown using images originally taken on October 21 2003 at the Palomar Observatory in San Diego County, California, USA.