General fact: 68 is the ideal temperature (F) for developing black-and-white film.
Mathematical fact: 68 is the 2-digit string that appears latest in the decimal expansion of p.
Trivia: 68 is the ideal temperature (F) for developing black-and-white film.
Historical date: March 8th is the day in 1722 that the Safavid Empire of Iran is defeated by an army from Afghanistan at The Battle of Gulnabad, pushing Iran into anarchy.