For example: • 2025 = 45² • 1936 = 44² • 1849 = 43² The sequence of perfect square years starts all the way back at 1 AD, and ...

An analysis of the year 2025 as a perfect ... a square date if the number formed by the date is the square of a number. In 2025, there are six such square dates: January 9 (9/1/2025, since 955² ...