This is the SOLUNAR calendar/table.
You should read up about how it came to be.
Technically, its still a "theory" and not full scientific fact.
But some anglers here swear by it. Even Hunters use it.
I, on the other hand, ignore it completely.
Some of the best days I had were when the Solunar calendar said it was going to be its worse feeding day/time, and vice-versa.
It honestly never worked out for me, and I kick myself for staying home on days the Solunar table said I should stay home.
When it comes to Saltwater fishing, the 2 things that really should be considered prior to going are the following:
- Tides
- Weather