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Re: convert from Julian date to calendar date and vice verse [message #80727 is a reply to message #80704]

Tue, 03 July 2012 05:35

k_ghreep
Messages: 19
Registered: May 2012

Junior Member

On Jul 3, 12:32 pm, Stefan <stefan.meing...@gmail.com> wrote:
> Am Montag, 2. Juli 2012 15:21:45 UTC+2 schrieb (unbekannt):
>
>> Dear all,
>
>> I have the following time units of "days since 1-1-1 00:00:0.0".
>> 17619336. 17619360. 17619384. 17619408.
>> 17619432. 17619456. 17619480. 17619504.
>> 17619528. 17619552. 17619576. 17619600.
>
>> I would like to convert them from Julian date to calendar date and
>> vice verse.
>> thanks in advance
>> Khaled
>
> you could use this:
>
> http://idlastro.gsfc.nasa.gov/ftp/pro/astro/daycnv.pro
>
> but be aware that your dates are not Julian dates since the zero-point is wrong. The ZP for the JD is
>
> 12:00 January 1, 4713 BC, Monday
>
> and you will have to convert to this before you perform the conversion.

Hi Stefan,
I had tested your code for the following Julian day 17619600.D using
the following command
DAYCNV, 17628072.D, yr, mn, day, hr
I had got the following calendar date

43551 12 3 12.000000
please note that the time unit of "days since 1-1-1 00:00:0.0". how to
calculate the year in calender format?
Best wishes
Khaled

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[Message index]

		Re: convert from Julian date to calendar date and vice verse By: k_ghreep on Fri, 06 July 2012 10:56
		Re: convert from Julian date to calendar date and vice verse By: k_ghreep on Tue, 03 July 2012 05:35
		Re: convert from Julian date to calendar date and vice verse By: wlandsman on Sun, 08 July 2012 09:27

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