If you are referring to your school sports day, that is unanswerable. My personal sports day was on the last Thursday of half-term, if that helps you in any way.
EA Sports The Year in Sports - 2009 TV was released on: USA: 25 December 2009
Nation sports day is the day of sports nationally speaking.
Genuine Sports - 2009 was released on: USA: 13 November 2009 (internet)
Handmade Sports - 2009 was released on: USA: 6 February 2009 (limited)
2009 Champs Sports Bowl - 2009 TV was released on: USA: 29 December 2009
sports meet is when they discuss how the day is going to run while sports meet is the actual day
Mountain Sports - 2009 VG was released on: USA: 27 October 2009
Chaque Shorouq accessoires de sports 2009
Dynamo Sports was created in 2009.
Premier Sports was created in 2009.
America's Next Sports Star - 2009 was released on: USA: 24 November 2009
Many, many, MANY people in this world love the heck out of sports. Just like Presidents' Day is to honor presidents, sports' day is to honor sports :)