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Re: Full Julian date in date command formatting options?
From: |
Bob Proulx |
Subject: |
Re: Full Julian date in date command formatting options? |
Date: |
Sat, 12 Oct 2013 15:13:03 -0600 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
Erik Auerswald wrote:
> Eric Blake wrote:
> >>>If the astronomical term is what you want, then maybe you really
> >>>do have a format that cannot be expressed in any existing
> >>>notation, and maybe it really is worth burning a % notation. But
> >>>how common is the Astronomical Julian Date in shell programming?
> >>
> >>I instinctively turned to 'date' for the full Julian date for
> >>astronomical purposes, but I concede that this is not an
> >>incredibly common use case.
>
> I'd say that 'date' is the natural program to try for date
> manipulations. ;-)
>
> GNU systems are very useful in scientific settings, IMHO adding full
> Julian date in the astronomical sense to 'date' further enhances
> this.
I will just say that when I played with amateur astronomy one of the
first things I did was write conversion routines to convert to and
from the Julian Day Number. I wasn't writing in shell so it wasn't
something that 'date' would have helped me with doing. But in
astronomy it seems like one of the fundamental operations. I don't
know if there are many astronomers that program in shell though since
the shell is limited on high precision math. But it would probably be
a useful program generating timestamps for example.
Bob
- Full Julian date in date command formatting options?, Reed Underwood, 2013/10/11
- Re: Full Julian date in date command formatting options?, Eric Blake, 2013/10/11
- Re: Full Julian date in date command formatting options?, Eric Blake, 2013/10/11
- Message not available
- Re: Full Julian date in date command formatting options?, Eric Blake, 2013/10/11
- Re: Full Julian date in date command formatting options?, Erik Auerswald, 2013/10/11
- Re: Full Julian date in date command formatting options?, Eric Blake, 2013/10/11
- Re: Full Julian date in date command formatting options?, Reed Underwood, 2013/10/11
- Re: Full Julian date in date command formatting options?, Reed Underwood, 2013/10/11
- Re: Full Julian date in date command formatting options?,
Bob Proulx <=