Births on January 15

Janusz Kusociński, Polish runner and soldier (d. 1940)

Janusz Tadeusz Kusociński (15 January 1907 – 21 June 1940) was a Polish athlete, winner in the 10,000 meters event at the 1932 Summer Olympics.

23 May

Parliament of Finland
The unicameral Parliament of Finland gathers for its first plenary session.
22 Jun

Charing Cross, Euston and Hampstead Railway
The London Underground's Charing Cross, Euston and Hampstead Railway opens.
7 Sep

RMS Lusitania
Cunard Line's RMS Lusitania sets sail on her maiden voyage from Liverpool, England, to New York City.
16 Nov

RMS Mauretania (1906)
Cunard Line's RMS Mauretania, sister ship of RMS Lusitania, sets sail on her maiden voyage from Liverpool, England, to New York City.
31 Dec

Times Square
The first New Year's Eve celebration is held in Times Square (then known as Longacre Square) in Manhattan.