General fact: 450 is a perfect score in Canadian five-pin bowling.
Mathematical fact: 450 is the number of 13-iamonds with holes.
Trivia: 450 is a perfect score in Canadian five-pin bowling.
Historical date: March 25th is the day in 1965 that Civil rights activists led by Martin Luther King, Jr. successfully complete their 4-day 50-mile march from Selma to the capitol in Montgomery, Alabama.