method

commercial_to_jd

v1_8_6_287 - Show latest stable - Class: Date

commercial_to_jd(y, w, d, ns=GREGORIAN)

public

Convert a Commercial <a href="/ruby/Date">Date</a> to a Julian Day Number.

y, w, and d are the (commercial) year, week of the year, and day of the week of the Commercial <a href="/ruby/Date">Date</a> to convert. sg specifies the Day of Calendar Reform.

# File lib/date.rb, line 432
  def self.commercial_to_jd(y, w, d, ns=GREGORIAN)
    jd = civil_to_jd(y, 1, 4, ns)
    (jd - (((jd - 1) + 1) % 7)) +
      7 * (w - 1) +
      (d - 1)
  end

commercial_to_jd

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