Now if leap year happens on the first, second or third year of the period, there will be five leap years in the period, but only four when the first leap year falls on the fourth.
Then, Since Every Year Which Is Not A Leap Year Ends With The Same Day As That With Which It Began, The Dominical Letter Of The Following Year Must Be L 1, Retrograding One Letter Every Common Year.
From 1582 To 1700 The Difference Between The Old And New Style Continued To Be Ten Days; But 1700 Being A Leap Year In The Julian Calendar, And A Common Year In The Gregorian, The Difference Of The Styles During The 18Th Century Was Eleven Days.
It Will Be Remembered That In A Leap Year There Are Always Two Dominical Letters, One Of Which Is Employed Till The 29Th Of February, And The Other Till The End Of The Year.
The English Denomination Of Leap Year Would Have Been More Appropriate If That Year Had Differed From Common Years In Defect, And Contained Only 364 Days.
But every leap year one day must be added to the lunar month in which the 29th of February is included.
As The Number Of Days In The Week And The Number In The Year Are Prime To One Another, Two Successive Years Cannot Begin With The Same Day; For If A Common Year Begins, For Example, With Sunday, The Following Year Will Begin With Monday, And If A Leap Year Begins With Sunday, The Year Following Will Begin With Tuesday.
In 1795, and not in 1796, the leap year in the Gregorian calendar.