[time-nuts] Equinox and sidereal time

[Tim Shoppa]

Try the _Astronomical Almanac_. I am not so familiar with the
navigation almanacs, but the bread and butter of the astronomical
almanac is the equation of time and transformation between time
systems. The joint publisher is HMNAO so I'm sure not banned from
Australia :-)

On 3/24/14, Neville Michie <namichie at gmail.com> wrote:
> Thanks Paul,
> I should be able to get this information online,
> but nearly all my attempts to get information from
> USA military sites seem to be blocked to Australia,
> or may be just to me.
> I click the URL and wait two minutes and it times out.
> Any time day or night.
> It is very frustrating as the sites appear to be available
> to everyone else.
> I bought the Nautical Almanac but it does not have such information.
> It is very hard to find alternate sources of the data.
> cheers,
> Neville Michie
>
> On 24/03/2014, at 11:06 AM, Paul wrote:
>
>> On Sun, Mar 23, 2014 at 7:02 PM, Neville Michie <namichie at gmail.com>
>> wrote:
>>
>>> can anyone out there point me to a source
>>> for the exact time of the equinoxes and solstices
>>>
>>
>>
>> I think you want this: http://aa.usno.navy.mil/data/docs/geocentric.php
>>
>> e.g. RA 0 is 2014 Mar 20 16:57:07.5 or RA 12 is 2014 Sep 23 02:29:08.5
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