Pat Naughtin wrote: "The month is the relatively un-uniform interval of time it takes for the Moon to revolve around the Earth, and it has proven to be fairly difficult to use as a regulator of human time."
The time it takes the Moon to orbit the Earth is the lunar month and IS more or less uniform. However, unlike the arbitrary and non-uniform calendar month, the number of lunar months in a year is not an integer. I know you know that, but for some reason it didn't come out right when you wrote it. If I had done that, I would excuse it as a senior moment. Bill Potts, CMS Roseville, CA http://metric1.org [SI Navigator]
