February 6: Sámi National Day (1917); Waitangi Day in New Zealand (1840)

Signing of the Washington Naval Treaty

• 590 – Vistahm and Vinduyih deposed their brother-in-law Hormizd IV, King of Kings of the Sasanian Empire.
• 1579 – Domingo de Salazar, a Spanish Dominican friar, was appointed the first bishop of Manila.
• 1865 – Finland established its modern system of secular municipalities, separate from church parishes.
• 1922 – Representatives from France, Italy, Japan, the United States, and the United Kingdom signed the Washington Naval Treaty (pictured), agreeing to limits on naval construction in the hopes of preventing an arms race.
• 1987 – Mary Gaudron became the first woman to be appointed a justice of the High Court of Australia.