Interpretation of Julian Date in Java

Question

I am trying to adjust a code at work, the issue I face is with JAVA script using Eclipse. I cannot understand how Julian Date or Number is there calculated or chosen because I need to adjust it.

Any suggestions on this brainer?

An example would be:

jToday=2456324.5

Thank you very much for your input!

Java, frankly didn't know there is a difference; I am new at this! — maximladus, Mar 22 '13 at 08:55
[Java, JavaScript, Ham and Hamster](http://coding.smashingmagazine.com/2009/07/29/misunderstanding-markup-xhtml-2-comic-strip/) — Jesper, Mar 22 '13 at 09:08

score 2 · Accepted Answer · answered Apr 21 '15 at 15:56

You can use Joda lib to convert Julian days to java date

DateTime dt =  new DateTime(DateTimeUtils.fromJulianDay(2456324.5));

Julian date - number before decimal point represent number of days since noon on January 1, 4713 BC, and after decimal point fraction of the day; For example, the Julian Date for 1.1.2013 UT 0:30:00, is 2456293.520833

score 1 · Answer 2 · answered Mar 22 '13 at 09:01

1

You can use joda-time to convert between a Julian date like the one you have and any other calendar:

http://joda-time.sourceforge.net/cal_julian.html

You can also use this function:

http://www.rgagnon.com/javadetails/java-0506.html

answered Mar 22 '13 at 09:01

jspcal

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Interpretation of Julian Date in Java

2 Answers2