Re: [time-nuts] Equinox and sidereal time

2014-03-24 Thread Neville Michie
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

Re: [time-nuts] Equinox and sidereal time

2014-03-24 Thread 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

Re: [time-nuts] Equinox and sidereal time

2014-03-24 Thread Said Jackson
Neville, Use an AOL account to access the web. Has worked for me like a charm for two decades now even in places like China that like to block most of the good US sites. Basically creates a VPN into the AOL servers bypassing all the filtering. Bye, Said Sent From iPhone On Mar 24, 2014, at

Re: [time-nuts] Equinox and sidereal time

2014-03-24 Thread Tim Shoppa
I think this sort of table is what you want, right? Vernal equinox is when sun passes through zero point of right ascension. I made this online at http://aa.usno.navy.mil/data/docs/geocentric.php Astronomical almanac has coarser tables and constants/instructions for interpolating. I think the

Re: [time-nuts] Equinox and sidereal time

2014-03-24 Thread Michael Spacefalcon
Said Jackson saidj...@aol.com wrote: Use an AOL account to access the web. Or use Tor. Can you get to Tor entry nodes from Australia? SF ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

Re: [time-nuts] Equinox and sidereal time

2014-03-24 Thread 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

Re: [time-nuts] Equinox and sidereal time

2014-03-24 Thread 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

[time-nuts] Equinox and sidereal time

2014-03-24 Thread Ronald Held
Find a copy of Meeus's Astronomical algorithms and program it for when you want the data. Ronald ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the

[time-nuts] Equinox and sidereal time

2014-03-23 Thread Neville Michie
Hi, can anyone out there point me to a source for the exact time of the equinoxes and solstices so that I can synchronise a sidereal clock? I assume that at some time the Universal Time we use is exactly the same as Sidereal time, and so a Sidereal clock could be set. I have a Tbolt producing

Re: [time-nuts] Equinox and sidereal time

2014-03-23 Thread Brian Lloyd
On Sunday, March 23, 2014, Neville Michie namic...@gmail.com wrote: Hi, can anyone out there point me to a source for the exact time of the equinoxes and solstices so that I can synchronise a sidereal clock? Check the USNO's website. -- Brian Lloyd, WB6RQN/J79BPL 706 Flightline Drive

Re: [time-nuts] Equinox and sidereal time

2014-03-23 Thread Antonio A. S. Magalhaes
Go to The Astronomical Almanac: asa.usno.navy.mil --- Antonio A.S. Magalhaes. Em 2014-03-23 23:02, Neville Michie escreveu: Hi, can anyone out there point me to a source for the exact time of the equinoxes and solstices so that I can synchronise a sidereal clock? I assume that at some time

Re: [time-nuts] Equinox and sidereal time

2014-03-23 Thread Paul
On Sun, Mar 23, 2014 at 7:02 PM, Neville Michie namic...@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