How Solunar Hunting Tables Work

What solunar theory actually claims

John Alden Knight published the original solunar tables in 1926 after observing that fish and game activity tracked the moon's position more reliably than the sun's. The model is simple: animals feed and move hardest when lunar gravitational pull is strongest at their location. That happens four times a day — twice when the moon is overhead or underfoot (the major periods) and twice when it crosses the horizon at moonrise and moonset (the minor periods).

Major periods vs. minor periods

• Major periods. Roughly two hours long, centered on lunar transit (overhead) and antitransit (underfoot, on the opposite side of the planet). These are the strongest activity windows.
• Minor periods. Roughly one hour long, centered on moonrise and moonset. Weaker than majors but still rated above baseline.

A typical day shows two majors and two minors. When a major overlaps dawn or dusk — the natural crepuscular feeding windows for most game — the activity rating spikes.

How moon phase changes the rating

New moon and full moon phases are rated highest because the sun and moon are aligned (syzygy), producing the strongest combined gravitational pull. New-moon nights are especially valuable for daytime hunters: dark skies suppress nocturnal feeding, which can push deer activity into legal shooting hours. Full moon does the opposite — bright nights extend nocturnal movement — but overcast cover or heavy weather can flip a full-moon night back into a productive day.

What solunar predictions don't account for

Use solunar data as one input, not a verdict. Weather (especially a falling barometer and incoming front), hunting pressure, food availability, the rut, and species behavior all carry weight. The most consistent advisors stack as many positives as possible: solunar major + dawn or dusk + a weather change + low pressure + the rut.

How to read a state-specific solunar table

Each state page on Hunter Passport pre-loads the calculator with the state's timezone and shows major/minor windows shifted accordingly. Plan around the windows that overlap legal shooting hours, then cross-reference against weather and species patterns. Always verify the current season dates and bag limits with your state wildlife agency — solunar timing is useless if you're hunting on a closed day.