On Sep 17, 2011, at 10:42 PM, Kevin Benson wrote:

> The julianday() function returns the Julian
> day<http://en.wikipedia.org/wiki/Julian_day>- the number of days...
> 
> <emphasis> since noon </emphasis> in Greenwich on November 24, 4714
> B.C. (Proleptic
> Gregorian 
> calendar<http://en.wikipedia.org/wiki/Proleptic_Gregorian_calendar>).

The SQLite documentation explicitly refers to Julian Day Number (JDN), as 
opposed to Julian Date (JD):

%J              Julian day number

http://www.sqlite.org/lang_datefunc.html

Not to split hairs, but there is a practical differences between a Julian Day 
Number and a Julian Date:

"The Julian date (JD) is the interval of time in days and fractions of a day 
since January 1, 4713 BC Greenwich noon, Julian proleptic calendar."

"The Julian day number (JDN) is the integer part of the Julian date (JD)."

http://asa.usno.navy.mil/SecM/Glossary.html#j

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