Leap year

Definition and stakes

George Nichols Packer,  Our Calendar

“ CHAPTER VII. RULES FOR FINDING THE DAY OF THE WEEK OF EVENTS THAT TRANSPIRED PRIOR TO THE CHRISTIAN ERA.
First, it should be understood that the year 4 is the first leap year in our era, reckoning from the year 1 B. C., which must necessarily be leap year; so that the odd numbers 1, 5, 9, 13, etc., are leap years. Hence every year that is divisible by four and one remainder, is leap year; if no remainder, it is the first year after leap-year; if 3, the second; if 2, the third, thus:
and so on, every year being divided by four and 1 remainder is leap-year of 366 days.
”
Source: Gutenberg

Portrait of O. Henry O. Henry,  Postscripts

“ Spinsters must be up and doing: 1896 will be the only leap year for the next eight years. Once in every four years the wise men who made the calendar insert an extra day so that the average year will not be so short. ”
Source: Gutenberg

George A. Barton,  Archæology and the Bible

“ As their calendar made no allowance for leap year, in four years their new year began a day too soon, in eight years two days too soon, and so on. In 1,460 years (i. e., 365 × 4) their [Pg 23] New Year’s Day would make a complete circuit of the year. These periods of 1,460 years are called Sothic Cycles. ”
Source: Gutenberg

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