How rare was this Saturday in College Basketball?

Since the AP Poll began in the 1948-49 season, there have now been:
1,796 days at least 1 AP-Top 5 team lost
296 days at least 2 of 5 lost
38 days at least 3 of 5 lost
3 days at least 4 of 5 lost
1 day that ALL 5 lost (Saturday) pic.twitter.com/PzAyQovvJw

— ESPN Stats & Info (@ESPNStatsInfo) February 27, 2022