method

jd_to_ajd

v1_8_6_287 - Show latest stable - Class: Date

jd_to_ajd(jd, fr, of=0)

public

Convert a (civil) Julian Day Number to an Astronomical Julian Day Number.

jd is the Julian Day Number to convert, and fr is a fractional day. of is the offset from UTC as a fraction of a day (defaults to 0).

Returns the Astronomical Julian Day Number as a single numeric value.

# File lib/date.rb, line 490
  def self.jd_to_ajd(jd, fr, of=0) jd + fr - of - 1.to_r/2 end