- 17December 17, 1990No events
- 18December 18, 1990No events
- 19December 19, 1990No events
- 20December 20, 1990No events
- 21December 21, 1990No events
- 22December 22, 1990No events
- 23December 23, 1990No events
Daily challenges run on a 6-week cycle, repeating every 6 weeks.