Meaning of leap day | Babel Free

Definitions

An extra day intercalated into a year, especially the day intercalated into the Julian calendar every fourth year and into the Gregorian calendar every fourth year excepting centuries not divisible by 400, usually reckoned as February 29th.

Equivalents

Examples

“This yere leapt, and the leap⟳ day was the morrow after the feast Terminalia.”

“The lunar cycle among the Chaldeans was called the saros and sara, from סהרא, sahara, the moon. This cycle it is said contained two hundred and twenty-three synodical months, or eighteen Julian years, ten days, when the same cycle or period contains five leap⟳ days, and eleven days when it contains four leap⟳ days, seven hours, forty-eight minutes, and one-fourth; in which time all the corresponding new and full moons and eclipses return⟳ again.”

“We observe⟳ then, with respect⟳ to the Julian cycle of leap-year, that, though we speak⟳ of it commonly as the cycle of the leap-year, it is in reality only the cycle of the leap-day. And this distinction is of much importance, especially to the present⟳ question⟳. For the cycle of leap-year according to the Julian rule⟳ is one of four years, because the cycle of the leap-day in the Julian calendar is one of four also.”

“According to our current calendar, on what day of the week will January 1 fall⟳ in the year 3000? in the year 1,000,000? in the year 10^(1,000,000)? […] In the thousand years from the year 2000 to the year 3000, there are 365,000 days, plus 250 leap⟳ days, minus 10 century leap⟳ days omitted, plus 3 leap⟳ days restored in the years 2000, 2400, and 2800, for a total of 365,243 days, or 57,177 weeks and 4 days. Since January 1 falls on a Saturday in the year 2000, it will fall⟳ four days later on a Wednesday in the year 3000.”

“According to the new leap⟳ rule⟳, leap⟳ years are years whose last⟳ two digits are divisible by 4. To correct⟳ for the slightly shorter length of the solar year, 3 leap⟳ years are omitted every 400 years, and to that end⟳, leap⟳ days are omitted in the secular years whose unit is not divisible by 4. Accordingly, the years 1700, 1800, and 1900 were not leap⟳ years, but 2000 was one again.”

CEFR level