Crescent Moon visibility
Find sunset, Moon lag, elongation and altitude for an evening crescent at your location, with a practical viewing window.
Evening crescent geometry
- Phase at viewing time
- Waxing Crescent
- Illumination
- 9.62%
- Sunset
- 13 October 2026 at 18:11 BST
- Moonset
- 13 October 2026 at 18:42 BST
- After-sunset lag
- 31.4 min
- Viewing time
- 13 October 2026 at 18:25 BST
- Moon altitude
- 1.48°
- Sun–Moon separation
- 35.94°
- Lunar age
- 3.07 days
- Geometry screen
- Does not meet all three thresholds
The viewing time is sunset plus four-ninths of the Moonset lag. This planner’s geometry screen requires a waxing Moon no more than 25% lit, altitude at least 5°, elongation at least 10° and lag at least 40 minutes. Use a clear, unobstructed western horizon; haze and clouds can hide a crescent even when these thresholds are met.