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Originally Posted by [1ponders]
How is it determined when the GRS has transitted the meridian. Is it at first contact of GRS and meridian or is it when the GRS is halfway across the meridian?
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Hi Paul,
Suggest you email John McAnally, in Texas, who is the transit timings co-ordinator
at the Association of Lunar and Planetary Observers. His email address
is
CPAJohnM@aol.com
Hopefully he will be able to assist with information as to the convention.
Gary Kopff
Mt. Kuring-Gai NSW 2080