Oh, yes, that is a great site!
You know what, though? I learned that rhyme as
Red sky at night, sailor's delight;
Red sky at morning, sailor take warning.
Isn't it neat how so many of us learn the "same" things, but with variations here and there? Jean Ritchie mentioned that in her "Singing Family of the Cumberlands"--how the same song would have slightly different words or tune in different parts of the mountains.