Late last year (2010-10-21), Uruguay's Executive sent a bill to the Uruguayan Parliament to exclude the May 18 public holiday, in 2011, from the current rules that move mid-week public holidays, as it corresponds to the bicentennial of the battle of Las Piedras.
Earlier this month (2011-05-02), the Uruguayan Chamber of Deputies approved the amendment that the upcoming Battle of Las Piedras public holiday would be held on its fixed date in 2011.
What remains is for the Uruguayan President to sign the bill into law.
Note that, technically, as is the case for over half of Uruguay's public holidays, Wednesday, May 18, 2011, will be a working public holiday ("El feriado del miércoles 18 de Mayo no será corrido y será laborable") meaning that, officially, only the public sector will benefit from it.
Links and References
Below are links to the news stories referred to in the above "Uruguay Senate Approves May 18 Public Holiday" news story, as well as links to subsequents news stories which refer to the present news story.