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The modified Julian day number is in elapsed days since midnight (Coordinated Universal Time) on November 17, 1858 CE (in the Gregorian calendar).

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And the chronological modified Julian day number is a variation of the modified Julian day number. In this document, when the term “modified Julian day number” simply appears, it just refers to “chronological modified Julian day number”, not the original.

In those classes, those are so-called “amjd” and “mjd”.

The month and the day of month should be a negative or a positive number (as a relative month/day from the end of year/month when negative). The last argument should be a Julian day number which denotes the day of calendar reform.

Date:: ITALY (2299161=1582-10-15), Date:: ENGLAND (2361222=1752-09-14), Date:: GREGORIAN (the proleptic Gregorian calendar) and Date:: JULIAN (the proleptic Julian calendar) can be specified as a day of calendar reform.

date and datetime class - Tadayoshi Funaba 1998-2011 'date' provides two classes: Date and Date Time.

Some terms and definitions are based on ISO 8601 and JIS X 0301.

The new style is the Gregorian calendar, which is the current civil calendar of many countries.

The day count is virtually the astronomical Julian day number.

Formats date according to the directives in the given format string. Any text not listed as a directive will be passed through to the output string.

A directive consists of a percent (%) character, zero or more flags, an optional minimum field width, an optional modifier, and a conversion specifier as follows.

Creates a date object denoting the given week date.

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