🌓 Last Light

When does the sun actually stop shining on a spot? Click the map — this accounts for the mountains and ridges around your point, not just the flat-earth sunset time.

    Shade map colors everything you can see by when it loses direct sun on the chosen date — scan for the spots that hold sun longest.
    Click anywhere on the map to pick a spot (try a valley near Crested Butte). You can drag the marker to fine-tune. Switch base layers / hillshade blend with the control on the map.
    Sun path vs. terrain horizon first sun last sun
    Sun through the year at this spot first sun last sun
    Tap the chart to jump to that date. The gold band is the daily window of direct sun this spot actually gets, terrain included.
    Sun position: NOAA algorithm · refraction & earth-curvature corrected · terrain scanned 360° out to 50 km.
    Elevation: Mapzen/AWS Terrain Tiles. Maps: OpenStreetMap, OpenTopoMap, Esri.
    Estimates only — tree cover and buildings are not modeled.