Fatto generale: 68 is the ideal temperature (F) for developing black-and-white film.
Fatto matematico: 68 is the 2-digit string that appears latest in the decimal expansion of p.
Trivia: 68 is the number of sectors on one cylinder of MFM hard disks with 4 heads and 17 sectors per track.
Data storica: March 8th is the day in 1985 that a failed assassination attempt on Sayyed Mohammad Hussein Fadlallah in Beirut, Lebanon, kills at least 45 and injures 175 others.