Every single Summer Olympic Games in a Leap Year ending in a 6 faces bad luck
1916 - Berlin
- Cancelled due to WWII, first Olympics to be cancelled
1936 - Berlin
- Hosted during the Nazi regime
- Significant calls for boycotts
1956 - Melbourne
- Held in late 1956, the latest-ever Olympics
- Netherlands, Spain and Switzerland did not participate due to the Suez Crisis, China was absent
- Blood in the pool water polo match
- First boycotted Olympics held during Cold War
1976 - Montreal
- A financial disaster, cost blowouts ballooning to CAD1.6b that was paid 30 years after the Olympics
- Australia failed to win a gold medal
- Olympic Stadium becomes a white elephant
- Boycotts by many African nations
1996 - Atlanta
- Centennial Olympic Park bombing
- The Coca-Cola Games
- Transportation failures and issues
2016 - Rio
- infrastructure woes
- Zika virus outbreak
- Performance and misfortune. Cate Campbell in swimming for Australia with the Australian team winning only 8 gold medals far below their performance at recent Olympics in Tokyo and Paris
- security and crime issues