[fitsbits] Re: leap second alert

Arnold Rots arots at head-cfa.harvard.edu
Wed Dec 15 08:07:30 EST 1999


The USNO has a useful summary page:

	http://tycho.usno.navy.mil/systime.html

The Chandra Data Archive has a page on time, as well:

	http://hea-www.harvard.edu/~arots/time/time_tutorial.html

Skywise wrote:
> I normally just lurk on this NG as I only have a passing interest in FITS.
> 
> But this conversation about time has been very interesting. Basically, I was
> unaware of the many different standards of time that there obviously seems
> to be. I was under the impression that UTC = GMT and that this time standard
> was the proverbial "it" when it came to precision time. I am apparently wrong.
> 
> Many types of time have been thrown about by their abbreviations (TT, TAI,
> TCG, TDB, etc...) and I was wondering if there's an online resource where I
> could learn all about them.
> 
> Thanx in advance. :)
> 
> 
> -- 
> S*k*y*w*i*s*e
> http://home.earthlink.net/~skywise711/  Laser & Optics links galore!!!
> common grammatical errors: to/too/two affect/effect input/imput your/you're
> then/than there/their/they're no/know/now buy/by a/an/and here/hear
> use/used where/were/we're

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Arnold H. Rots                                Chandra X-ray Science Center
Smithsonian Astrophysical Observatory                tel:  +1 617 496 7701
60 Garden Street, MS 81                              fax:  +1 617 495 7356
Cambridge, MA 02138                             arots at head-cfa.harvard.edu
USA                                     http://hea-www.harvard.edu/~arots/
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