31 December is the 365th day of the year (366th in leap years). There are no days remaining in the year, as 31 December is New Year's Eve (the last day of the year).
- 1926: Tom Marvolo Riddle is born to Tom Riddle Sr. and Merope Gaunt at Wool's Orphanage in London, England. His father is not present for the event, and Merope dies shortly afterwards.
- 31 December on Wikipedia