Your best informants are (1) your knowledge of your lake or river, and (2) a fishing journal, in which you record the conditions, tackle, and results
That sounds just like a solunar clock...Just the journal has been made by thousands of people over hundreds of years
Watching moon, sun and tides and comparing that to catches and feeding.
"conditions" "tackle" and "results" is very much like Sun, Moon, Tides and results
itsaboat mate...Life is just a boat and then ya marry one !