Open datasets
Everything here is computed, documented, and free to reuse with attribution (“Tidewindow, computed from NOAA CO-OPS predictions”, CC BY 4.0). One new dataset ships every quarter.
The Daylight Minus-Tide Index, 2026–27
US coastal sites ranked by their total explorable hours — how much daylight minus-tide time each beach actually gets over the next 12 months. Launch edition: 12 stations; expanding continuously.
Per-station window data (JSON + iCal)
Every station page links its complete computed window dataset — 400 days of windows, scores, and sun times as JSON, plus a subscribable calendar feed.