[baudrunner]

Objective time would refer to time as a stable frame of reference, never mind that some perceive time as "moving forward" we really are all here always now. It is the same for everybody according to the time on their clocks which can be converted to the clock time for anywhere on the planet without going there and it's still really the same time.

Subjective time would be the time taken for a chemical reaction so I don't know where the idea came from that chemical clocks are necessarily more accurate because if you move some reactions to the window sill the sunlight speeds them up.

The comparison then is with time as a standard frame of reference which is the same for everybody occupying the same reality (not flying or on a spaceship or on a train even) and time as variable and inconsistant in which the same event in the same reality can be seen to occur at diferent rates over different occurances depending on the conditions in which the event takes place.

In other words still, we could take a twenty minute walk in the summer or in the winter and the walk would take exactly twenty minutes of objective time but if we took a chemical clock with us each time the reaction would occur more rapidly in summer than in winter so its time would be subjective.

I think that is as close as one can come to describing objective and subjective time.