The physics of your idiot guru still inconsistent

https://en.wikipedia.org/wiki/Second
As seen, the definition of second loved so
much to be invoked by relativistic morons -
wasn't valid in the time when their idiot guru
lived and mumbled. Up to 1960 it was ordinary
1/86400 of a solar day, also in physics.
Now: an observer moving with c/2 wrt
solar system is measuring the length
of solar day. What is the result predicted
by the Einsteinian physics?
One prediction is - 99766. From the
postulates. The second prediction is -
86400. From definition.
And similiarly with the prediction of
a measurement of a meridian.
Thank you for your attention, poor
relativistic fanatics, have a nice day.