Papa's Day ...

[PPS]

Although it has been proved to be "inaccurate" in some respects, I found this on Wikipedia:-

http://en.wikipedia.org/wiki/Father's_Day

Third Sunday of June
Argentina, Bahamas, Bangladesh, Bulgaria, Canada, Chile, China, Colombia, Costa Rica, Cuba, Cyprus, France, Greece, Guyana, Hong Kong, India, Ireland, Jamaica, Japan, Malaysia, Malta, Mauritius, Mexico, Netherlands, Pakistan, Panama, Paraguay, Peru, Philippines, Puerto Rico, Singapore, Slovakia, South Africa, Sri Lanka, Switzerland, Trinidad and Tobago, Turkey, United Kingdom, United States, Venezuela, Zimbabwe

June 23
Nicaragua, Poland, Uganda

July 30
Vietnam

Second Sunday of July
Uruguay

Last Sunday of July
Dominican Republic

Second Sunday of August
Brazil

August 8
Taiwan

First Sunday of September
Australia, New Zealand

New Moon of September (Bhadra as per Lunar Calendar) (don't understand this one)

September 11
Nepal

Second Sunday of November
Estonia, Finland, Norway, Sweden

December 5
Thailand

February 23
Russia, Ukraine, Belarus

14 March (24 Esfand)
Iran

March 19
Bolivia, Honduras, Italy, Liechtenstein, Portugal, Spain

May 5
Romania

May 8
South Korea (Parents' Day)

Ascension Day
Germany

First Sunday of June
Lithuania

June 5 (Constitution Day)
Denmark

Second Sunday of June
Austria, Belgium, Ecuador

June 17
El Salvador, Guatemala


It will probably be better looking at the web page, but the list gives a general idea.