[time-nuts] Equinox and sidereal time

[David McGaw]

There is a UK version of the almanac:  http://asa.hmnao.com/

David N1HAC


On 3/24/14 7:26 AM, Tim Shoppa wrote:
> 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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