Here's a tidbit from "The Young Ladies' and Gentlemen's Chronology ©1805
To find Leap Year.
Rule—Divide the given'year by 4, and if 0 remains, it is leap year; but if 1, 2, or 3 remain, it shows the number of'years after leap year.
Answer: 1803 was the 3d year after Leap year, or, more Properly, it was one year before leap year, because 1800, for the reason already assigned, was'a common year.
Ex. The year 1804 is it common or leap year?
Ans. There being no remainder it is leap year.
And below are some examples for the student to try and prove. I left them in just for the fun of it.
Q. Will the year 1822 be a common or leap year?
Q. Will the years 1864, 1879, 1900 be common or leap years?