On Thursday, December 6, 2018 at 11:54:25 AM UTC, Mike Collins wrote:
Gerald Kelleher wrote:
Presently, images of a Lat/Long system are scarce for Mars and with good reason -
https://www.researchgate.net/profile...oximity-of.png
Thankfully there is no 24 hour cycle with prime meridian, dateline, hour
divisions or any of the other timekeeping features which make Earth
timekeeping a masterpiece -
https://s22380.pcdn.co/wp-content/up...map-ALPO_A.jpg
It is tempting to just say that the Equatorial circumference of Mars
generates an equatorial speed of 889.3 km per Earth hour but then it
would not mesh with time divisions/ distances of 15 degrees/1 hour as on Earth.
Basically Mars is a clean sheet with the hour value unknown as the
integer of hours which operate with the geometry/geography of Mars go
into identifying exact locations as per a workable GPS system with the
equivalent of geostationary satellites and so on.
People have woken up to the endeavour and that in itself is an
accomplishment so while most will, of course, lean on old familiar
jargon, there is something special about creating a working system for
another planet using the masterpiece we inherited from our ancestors.
The Martian prime meridian passes through Sinus Meridiani. Hint - what does
the name suggest?
Got a prime meridian then the Martian 24 hour day will have a dateline meeting at 180 E and 180 W hence it is meant to meet timekeeping of a 24 hour Martian day -
https://i.ytimg.com/vi/X1DkiuaFCuA/maxresdefault.jpg
Then you are into calendar creation and that can't be a mongrel system for Mars but as Mar's calendar will be as unique and distinct as the Earth's calendar framework is.
Maybe you would like a 360 degree framework as currently exists on Mars it is Monday a mile West of Greenwich and Tuesday a mile East of Greenwich.
https://s22380.pcdn.co/wp-content/up...map-ALPO_A.jpg
Go back into the other thread where you can do no harm as I set aside the other thread for all objections. Of course people who lack integrity respect nothing including their own national history on clocks and longitude as Harrison knew all too well. This is different, this is a clean sheet for a planet and a complete timekeeping and geometrical framework for productive use.