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Preview Ruby 4.1 is a preview. It can change before the final release. Switch to Ruby 4.0 →

instance method

Date#amjd

() -> ::Rational
d.amjd → rational

Returns the astronomical modified Julian day number. This is a fractional number, which is not adjusted by the offset.

Example
DateTime.new(2001,2,3,4,5,6,'+7').amjd    #=> (249325817/4800)
DateTime.new(2001,2,2,14,5,6,'-7').amjd   #=> (249325817/4800)
See also #ajd #asctime #>> #ctime also in 4.0 · 3.4 · 3.3 · 3.2 · 3.1 · 3.0