February 14th is the birthday of Lara Croft, which incidentally is also Valentine's Day.
The date 14 February 1968 was established as Lara's birthday early on in the franchise.
- The loading screen on 14 February 2016 would sometimes read "Happy Birthday Lara Croft".
- In the Blood Ties Easter Egg 142 is the combination that opens Lord Croft's Secret Vault located under the Croft Manor.
From the fact that she is supposed to be 21 in the first reboot game - released in 2013 - we can conclude that she was born 14 February 1992.