Uruguay Public Holidays

January 1 New Year’s Day
January 6 Epiphany
late February or early March Carnival/Mardi Gras  
late March or early April Maundy Thursday  
late March or early April Easter  
April 19 Landing of the 33 Patriots Day  
May 1 Labor Day  
May 18 Battle of Las Piedras  
June 19 Día del Nunca Más (‘Never Again Day’)  
July 18 Constitution Day  
August 25 Independence Day  
Second Monday in October Day of the Race  
November 2 All Souls’ Day  
December 25 Christmas
 

Switzerland

From the Swiss Government for 2011:
Swiss public holidays

01.01. New Year’s Day
02.01. Berchtold’s Day
22.04. Good Friday
25.04. Easter Monday
02.06. Ascension Day
13.06. Whit Monday
01.08. National Day
25.12. Christmas Day
26.12. St. Stephens Day
31.12. New Year’s Eve

This list contains the Federal Holidays without mentioning the holidays that always are on a Sunday (e.g. Palm Sunday Easter Sunday, etc.).
Some cantons may have additional local holidays (e.g. Ash Wednesday, Labour Day, etc.)