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ajd 

        # Date.ajd

(from ruby core)
---
    d.ajd  ->  rational

---

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

    DateTime.new(2001,2,3,4,5,6,'+7').ajd     #=> (11769328217/4800)
    DateTime.new(2001,2,2,14,5,6,'-7').ajd    #=> (11769328217/4800)

This is MURDOC! A Ruby documentation browser inspired by Smalltalk-80. It allows you to learn about Ruby by browsing through its class hierarchies, and see any of its methods.