Problem 12 (1995 AJHSME)

A "lucky" year is one in which at least one date, when written in the form month/day/year, has the following property: "The product of the month times the day equals the last two digits of the year". For example, $1956$ is a lucky year because it has the date $7/8/56$ and $7 \times 8 = 56$. Which of the following is NOT a lucky year?