Proleptic Gregorian Calendar

The proleptic Gregorian calendar is produced by extending the Gregorian calendar backward to dates preceding its official introduction in 1582.

Read more about Proleptic Gregorian Calendar:  Usage, Difference Between Julian and Proleptic Gregorian Calendar Dates

Famous quotes containing the word calendar:

    “To divide one’s life by years is of course to tumble into a trap set by our own arithmetic. The calendar consents to carry on its dull wall-existence by the arbitrary timetables we have drawn up in consultation with those permanent commuters, Earth and Sun. But we, unlike trees, need grow no annual rings.”
    —Clifton Fadiman (b. 1904)