Do you have any equations for calculating Jovian (or Pluto) time and date from UTC / GPS / TAI time? Lady Heather does not want to slight any of our other potential planetary overlords (but could whip their bloated gaseous asses in a fight)

I’ve often wondered how much sense it makes to speak of the rotational period of a gaseous planet. The different layers of the atmosphere potentially can have different rotational periods, and we can’t observe the actually rocky (or diamond, if you believe Arthur C. Clark) body at the center. I looked into writing firmware for the Crazy Clock for the other planets besides Mars. Mercury and Venus have extraordinarily long day lengths, so the math doesn’t work out, and the remaining planets are gaseous. > On Jul 9, 2016, at 9:23 AM, Mark Sims <holrum@hotmail.com> wrote: > > Do you have any equations for calculating Jovian (or Pluto) time and date from UTC / GPS / TAI time? Lady Heather does not want to slight any of our other potential planetary overlords (but could whip their bloated gaseous asses in a fight) > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.

Calculating the local planetary time is fine for solid objects with an accepted (or proposed) prime meridian , but I don’t think this is possible with gaseous objects where there is no fixed feature. > Le 9 juil. 2016 à 18:23, Mark Sims <holrum@hotmail.com> a écrit : > > Do you have any equations for calculating Jovian (or Pluto) time and date from UTC / GPS / TAI time? Lady Heather does not want to slight any of our other potential planetary overlords (but could whip their bloated gaseous asses in a fight) > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. "The power of accurate observation is commonly called cynicism by those who have not got it. » George Bernard Shaw

Hi You haven’t even scratched the surface yet …. What time is it on each of the moons? :) Bob > On Jul 9, 2016, at 12:36 PM, Mike Cook <michael.cook@sfr.fr> wrote: > > Calculating the local planetary time is fine for solid objects with an accepted (or proposed) prime meridian , but I don’t think this is possible with gaseous objects where there is no fixed feature. > >> Le 9 juil. 2016 à 18:23, Mark Sims <holrum@hotmail.com> a écrit : >> >> Do you have any equations for calculating Jovian (or Pluto) time and date from UTC / GPS / TAI time? Lady Heather does not want to slight any of our other potential planetary overlords (but could whip their bloated gaseous asses in a fight) >> >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > > "The power of accurate observation is commonly called cynicism by those who have not got it. » > George Bernard Shaw > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.

On 7/9/16 9:23 AM, Mark Sims wrote: > Do you have any equations for calculating Jovian (or Pluto) time and date from UTC / GPS / TAI time? Lady Heather does not want to slight any of our other potential planetary overlords (but could whip their bloated gaseous asses in a fight) > I'm sure JPL Horizons or a similar site has Spice Kernels which encapsulate such information. Jupiter has a 10 hour day, which should make things exciting