There is currently a thread on the USENET newsgroup alt.folklore.computers about phases of the moon. It is entitled “[Poll] Computing Favorites”. (Thread drift is a specialty of afc.)
Some interesting points:
1) It used to be that many (most?) calendars had phase-of-the-moon information. Now, this is not very common.
2) People, in general, are not aware of the phase of the moon. I know that I am not.
3) One poster’s ISP has a billing option of every lunar moon. I have checked the Webpage, and the ISP claims that some of their customers use it.
4) One poster stated that she ran across people who complained about phase-of-the-moon information on their desk calendars as being “pagan”. What a horrible inversion.
Have we gotten too sophisticated for our own good?