Dec 26 1993 saw 3 of the 4 lowest Vegas Over/ Unders for points in NFL history.

Bears/Lions 28 points (tied for lowest in NFL history)

Patriots/Colts 28 Points (tied for lowest in NFL history)

Eagles/Saints 29.5 Points (4th all time)

All games hit the over.

https://www.nytimes.com/athletic/5148898/2023/12/21/the-nfls-oddest-day-december-26-1993/

https://www.statmuse.com/nfl/ask?q=lowest+over%2Funder+in+nfl+history