On Monday, April 16, 2018 at 12:32:30 PM UTC-6, Gerald Kelleher wrote:
the delicate switch from 'average' to 'constant' rotation

It _is_ a delicate switch, but *you* insist on ignoring the circumstances under
which maintaining the distinction between the two is vital. *We* know the
difference, and maintain the distinction properly, and are still able to make use
of time in relation to longitude, thank you very much.

John Savard