How can I predict the lunar phase each day to improve my chances of catching fish?
Your best bet is to visit the US Naval Observatory lunar phase calculator and generate the lunar phase predictions for yourself for the days you will be fishing. As for whether this will improve your catch, I do not know if their is a scientific/statistical basis for this correlation or not. Since grunion and other fish follow lunar mating cycles, its seems plausible that fish may have a passing interest in the lunar phase to light up their environment for some reason.