Daylight Saving Time

On Saturday, November 4, 2017 at 11:52:00 AM UTC, Mike Collins wrote:
Gerald Kelleher wrote:
It seems that playing fast and loose with the English language or even
torturing it comes at a price as followers of the early 20th century
theorists have lost the capacity to put the back and forth motions of the
planets and satellites around the parent Sun or parent planet using the
normal language of motion to the left or to the right.

The rule of thumb is that a planet or a satellite, as we see it from
Earth, moves from left to right in front of the parent object and from
right to left as it travels behind it. This restores context after to
losing it to RA/Dec modelling.


Except in the Southern Hemisphere. Herodotus knew this and described it in
his account of the voyages of Phoenicians



Very simple rule to understand and use the analogy to support it.

Jupiter's satellites move from their widest point to the right of the planet as they pass in front of their parent and move from right to left as they moves behind the planet -

https://www.youtube.com/watch?v=zqZEgoJasPQ&t=21s

With notable exceptions, the inner planets process the same motions as they move from left to right in front of the Sun and from right to left as they turn in behind the Sun -

http://www.popastro.com/images/plane...ary%202012.jpg

I would love to show time lapse but only sequential imaging exists presently.


The Sun is stationary and central however the language of left/right can be used to describe the motions of the other planets and satellites or even the proof of the Earth's orbital motion where a star transitions from an evening to a morning appearance, not that the Earth moves parallel to the orbital plane but the Earth does. This alone accounts for the direct/retrograde motion of the faster moving Venus and Mercury and joins the separate perspective of direct/retrogrades of the slower moving planets seen from Earth.