Re: leap seconds

[Chris Albertson <chrisalbertson90278@yahoo.com>]

I've noticed that the C library does a very good job.  If you work
(internally) in units of time_t and only convert to other formats
for display all will work out fine.

I don't know about Python's internals.  I'm surprized it is not
based in the c libraries.

I have Julian date functions in C in you need them.  


SYNOPSIS
     #include <sys/types.h>
     #include <time.h>

     time_t time(time_t *tloc);

DESCRIPTION
     The time() function returns the value  of  time  in  seconds
     since 00:00:00 UTC, January 1, 1970.



--- Michael Doornbos <mike@imapenguin.com> wrote:
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> I am writing a python program to log variable observations.  I have a
> function 
> in the program that computes the current Julian date (or any Julian
> date 
> given date/GMT).  I tested it against XEphem and I was a little off. 
> I got 
> better day/year values for earth (23.9344 and 365.2422) and it got
> very 
> close, but was always 13 seconds off.  Then I checked for the current
> leap 
> second status and it happens to be 13.  So now the program reports
> the 
> correct Julian Date, but my question is:
> 
> Do we take the leap seconds into account or not?  Apparently my Linux
> box 
> running ntp, with Python2.2's time module has no idea that they
> exist.  Can 
> someone enlighten me?
> 
> Thanks,
> 
> Mike
> 
> 
> - -- 
> Michael Doornbos
> President
> Imapenguin, LLC
> mike@imapenguin.com
> www.imapenguin.com
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=====
Chris Albertson 
  Home:   310-376-1029  chrisalbertson90278@yahoo.com
  Cell:   310-990-7550
  Office: 310-336-5189  Christopher.J.Albertson@aero.org

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