On Monday, August 10, 2015 at 1:57:31 PM UTC-6, Quadibloc wrote:
On Sunday, August 9, 2015 at 3:57:57 PM UTC-6, Brian Denzer wrote:

What is he talking about, how did he arrive at those numbers, and what is the
unit used in the last term (thirds?)?

Yes, that is the standard symbol for the "third", one-sixtieth of a second.

For the Earth to travel 359° 45' 40" 31''' in one year, instead of 360° does mean that what definition of the year he is using is important.

365 days is also

0.999336878...

tropical years; so that's even more likely to be that to which he was referring.

So the figures given are the motions of the planets in tropical coordinates
over a period of 365 days (in sexagesimal notation). The answer to your
original question.

John Savard