Henry Ernest Dudeney/Puzzles and Curious Problems/171 - Multiplication Dates

by : $171$

 * Multiplication Dates
 * In the year $1928$ there were $4$ dates which, when written in the form ,
 * the day multiplied by the month equal the year.
 * These are,  ,   and  .


 * How many times in the $20$th century -- inclusive -- does this so happen?


 * Or, you can try to find out which year in the century gives the largest number of dates that comply with the conditions.
 * There is one year that beats all the others.