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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Sign of v correction to GHA
From: Ian Staniforth
Date: 2025 Feb 27, 01:24 -0800
From: Ian Staniforth
Date: 2025 Feb 27, 01:24 -0800
All the outer planets "orbit" the Earth slower than the Sun, which means (counter-intuitively), that their actual hourly motions always exceed the adopted hourly rate of 15° for the Sun and planets. So v is always positive. Think of it this way: if Mars didn't move at all, it would have the same hourly rate as Aries - 15°02.46' according to the Almanac. I'm expecting a question about Venus!...
