Four weeks at a time, ranked by when the sun, moon, and tide line up to put fish on the feed. No ads, no accounts.
Moon & sun windows are computed directly from astronomy for your exact coordinates: two daily major periods (moon overhead / underfoot) and two minor periods (moonrise / moonset), per John Alden Knight's 1926 solunar theory. A window is flagged Prime when it overlaps sunrise, sunset, or — if you've added a NOAA station — an actual high or low tide.
Tide times come from NOAA's free CO-OPS API for the station you set, so they're real predictions, not estimates — but that only covers stations in NOAA's network (mainly the US and territories). Elsewhere you'd need a different tide data source.
Solunar theory has a real physical basis (lunar gravity drives tides, and moving water is a well-documented feeding trigger) but the specific claim of sharp 1–2 hour "best window" spikes is folk-science in origin, not a peer-reviewed model — treat the rating as one input, not gospel. Weather, pressure, and species behavior matter too and aren't modeled here.