| Year | Month | Day | Event |
|---|---|---|---|
| 1989 | Oct | 01 | Denmark Introduces Registered Partnership, Legal Same Sex Union |
| 2001 | Apr | 01 | Netherlands Legalizes Same-sex Marriage |
| 2003 | Jan | 30 | Belgium Officially Recognizes Same-sex Marriages |
| 2009 | May | 01 | Same-sex Marriage Is Legalized In Sweden |
| 2013 | May | 30 | Nigeria Bans Same-sex Marriage |
| 2014 | Mar | 29 | England And Wales Perform Same-sex Marriages |
| 2015 | Mar | 03 | Slovenia Legalizes Same-sex Marriage |