There is also an issue about
reconciling (or not) times when contexts cross or merge.
This may already be addressed in current context processing such
as crossing the International Dateline and time zones.
For most of these issues there is a standard time such as GMT or
sidereal. Those are with respect to the Earth. Maybe there is a
need for a more cosmic time standard. We are a long way from that
point, but there are issues associated with planetary exploration.
Recently, the rotation rate of Venus was used as a reference, and
it was recently discovered that it is changing quite rapidly. As a
result, targeted landing spots are out of place by as much as 20
National Geographic: Venus Spinning Slower Than
On 4/8/2015 8:14 PM, John F Sowa wrote: