Commemorating historical events

The website United Nations Conferences and Observances (February 1997) provides good details on International Days, Years, Decades and other Observances recognized within the UN system.

1. Providing public celebrations
2. Organizing events
3. Holding celebrative social events
4. Commemorating

1. Celebrating birth

1. Commemorating death

1. Honouring historical personalities

1. Pardoning historical events

1. Commemoration of dishonourable historical events

1. Common sense
2. Celebration

1. United Nations Conferences and Observances