What happened on 27 December?

7 events from the Ever-When timeline, ranked by how much they mattered.

1. 537 Hagia Sophia completed Justinian's domed basilica in Constantinople; the largest interior space in the world for nearly a thousand years.
2. 1571 Born: Johannes Kepler German astronomer whose three laws describe planetary motion.
3. 2007 Assassination of Benazir Bhutto The former Pakistani prime minister and first woman to lead a Muslim-majority state is killed campaigning in Rawalpindi.
4. 2008 Gaza War (2008-2009) Israel's three-week offensive against Hamas in the Gaza Strip ('Operation Cast Lead'), causing heavy Palestinian casualties.
5. 1871 Carroll's Through the Looking-Glass Alice steps through a mirror into a chess-game world of Tweedledum and Tweedledee, Humpty Dumpty and the poem Jabberwocky.
6. 1911 Jana Gana Mana first sung Tagore's Bengali hymn is sung at the Calcutta session of the Indian National Congress; its first stanza becomes independent India's national anthem in 1950.
7. 1979 Operation Storm-333 Soviet special forces storm the presidential palace in Kabul and install a client government.