1st » A bomb 2011 Alexandria bombing e.g explodes as Copts e.g Coptic Christians in Alexandria, Egypt, leave a new year service, killing 23 people.
1st » The Administrative divisions of Greece known as Kallikratis plan becomes the new administrative system of Greece.
1st » Estonia joins the Eurozone.
8th » The attempted assassination of Arizona United States House of Representatives Representative Gabrielle Giffords and subsequent 2011 Tucson shooting shooting in Casas Adobes, Arizona at a Safeway Inc. Safeway grocery store, for which Jared Lee Loughner is
9th » Iran Air Flight 277 crashes near Orumiyeh in the northeast of the country, killing 77 people.
10th » 2010–2011 Queensland floods: Torrential rain in the Lockyer Valley region of South East Queensland named South East Queensland, Australia causes severe flash flooding, killing 9 people.
14th » The former president of Tunisia, Zine El Abidine Ben Ali fled his country to Saudi Arabia after a series of street demonstrations against his regime and corrupt policies, asking for freedom, rights and democracy, considered as the anniversary of the Tunis
31st » A January 31 – February 2, 2011 North American blizzard named winter storm hits North America for the January 25–27, 2011 North American blizzard e.g second time in the same month, causing $1.8 billion in damage across the United States and Canada and kil