Events during the year 2011 in Poland. Incumbents Elections Bold indicates government parties. Events January 1 January – 5 places: Wolbórz, Nowe Brzesko, Pruchnik, Czyżew and Gościno received city rights. 9 January – The nineteenth finale of the Great Orchestra of Christmas Charity. 10 January – A test HD version of TVP1 is launched, named TVP1 HD. 31 January – President of Poland Bronislaw Komorowski signed a law introducing a 35 percent quota for electoral lists. February 7 February – Warsaw summit of the Weimar Triangle. 19 February – Performance by the famous DJ Armin van Buuren in Poznań. 25 February – Abolition of the Property Commission of the Catholic Church. March 1 March – The first time Poland celebrated a new national holiday: National Day of Remembrance "Soldiers accursed". 25 March – The Polish Sejm adopted a government proposal declining pension contributions transferred to open pension funds. April 1 April – Start of the Polish Census 2011. 29 April – The court annulled the Walbrzych presidential election. May 17 May – Sejm investigative committee for Christopher Olewnik adopted a report on its work. June 5 June – Rebranding of phone company Era to T-Mobile Poland. 28 June – Lukasz Kaminski sworn in as president of the Institute of National Remembrance. July 1 July – Poland takes over the Presidency of the Council of the European Union from Hungary for a six-month term. 29 July – Committee for Investigation of National Aviation Accidents of the Polish Civil Aviation Authority announced a report on the causes of the Smolensk catastrophe on 10 April 2010. August 1 August – "The Law of 5 January 2011 - Election Code" comes into force. 4 August – The Polish President, Bronislaw Komorowski, officially announces the Parliamentary election date, set for 5 October 2011. 12 August – Four people have been killed and 30 people injured after a train derailed between Warsaw and Katowice in Poland. 18 August – The Gdynia District Court acquitted Adam Darski, the leader of death metal band Behemoth, accused of insulting religious feelings. September 3 September – Opening of the Polish National Stadium (Earlier called: Stadium of the Decade) 8–9 September – Tenth Jubilee International Ignatius Reimann Festival in Krosnowice. October 9 October – Polish Parliamentary Elections, 2011. Unknown date A Liquefied natural gas (LNG) plant was set up in Swinoujscie. Deaths January 2 January – Cezary Kuleszyński, hurdler. (b. 1937)