Solunar Fishing Guide: Major & Minor Times

Prepared by the Outgoing Tide guide team. Editorial standards

What major periods represent

The Moon crosses the local meridian at upper transit and reaches the opposite side at lower transit. Solunar systems commonly place longer “major” windows around those events. The displayed window is a convention built around an astronomical time; it is not a measured forecast of fish activity.

What minor periods represent

Minor windows are commonly centered on local moonrise and moonset. They are typically shorter than major windows. Moonrise and moonset depend on date and coordinates, so a table calculated for another location or time zone may be noticeably wrong.

Moon phase and tides are related—but different

Sun–Moon geometry contributes to tidal range. New and full moons are associated with spring tides, which generally have larger ranges; quarter moons are associated with neap tides, which generally have smaller ranges. Local tide timing and height still depend on coastline and basin response, so lunar phase alone cannot tell you the current at a fishing spot.

How strong is the fishing prediction?

Fish behavior is affected by many interacting factors, and a solunar period cannot isolate them. Weather changes, water temperature, dissolved oxygen, prey, spawning behavior, tide movement, pressure, clarity, angling pressure, and habitat can all dominate. Treat a star rating as a planning aid rather than a scientific guarantee.

A responsible way to use solunar periods

1. Remove windows with unsafe weather, access, or marine conditions.
2. Choose the tide stage that fits the habitat and species.
3. Check temperature trend, daylight, and seasonal behavior.
4. If two windows remain similar, use a nearby major or minor period as a tie-breaker.
5. Record actual activity so local experience can confirm or reject the pattern.

Why times vary among apps

Differences can result from coordinates, time zone handling, daylight saving time, the astronomy library, rounding, and how long each app defines a window. Confirm that the selected location and date are correct. Outgoing Tide calculates the astronomy for the selected station in the browser.

Keep the calculation separate from its interpretation

Outgoing Tide calculates lunar events for the selected coordinates and date. Those event times provide the basis for displayed windows. A major or minor label describes the system's convention; it is not a sample of feeding activity or a measurement of how many fish are present.

Check location and date after changing stations. Also check the time convention when comparing another table. Two displays can disagree because they define a window differently even when the underlying lunar event is similar. That disagreement does not establish that one table has found a more reliable bite forecast.

Hypothetical planning example: choosing between two workable outings

An angler has two possible windows, each already checked for suitable weather, access, tide stage, daylight, and a practical return. One overlaps a displayed minor solunar period. The angler uses that overlap as a preference and records it in the trip notes without promising a better catch.

If the forecast later changes, the angler reassesses the outing rather than protecting the solunar choice. A window that overlaps approaching thunderstorms or an unsuitable return is removed from consideration. The calculation has not changed, but the practical decision has, because astronomical timing is only one part of the plan.

Avoid turning a personal log into false certainty

A useful log includes quiet trips as well as catches, time spent fishing, habitat, method, weather, and tide context. Otherwise a memorable catch near a lunar event can stand out while many uneventful periods are forgotten. A small personal sample cannot establish that the lunar window caused the activity.

Use the log to improve observations and questions, not to publish a success percentage that the evidence cannot support. The source references below explain astronomy and tidal context; they do not validate a guaranteed fishing outcome. If the solunar display is unavailable, the weather, tide, access, and safety checks remain the foundation of planning. Missing lunar information is not a reason to invent a window or defer an otherwise necessary weather decision.

References and data sources

• U.S. Naval Observatory rise/set data services
• NOAA: tidal variations and lunar phase
• NASA: Moon phases

Interpretation note: Solunar periods are not weather or safety forecasts and do not guarantee feeding activity. Use them only as one contextual signal.