GnomonCast

Design and calibrate sundials for any latitude with AI shadow geometry

Image GenerationFree

GnomonCast computes gnomon angle, dial plate hour line positions, and declination corrections for any GPS coordinate and date range using high-precision solar ephemeris data. It outputs engraving-ready SVG dial plates scaled to user-specified dimensions with analemmatic correction curves pre-plotted. Designers can simulate shadow movement as an animated preview before committing to fabrication.

Key Features

• ✓High-precision solar ephemeris integration
• ✓GPS-aware gnomon angle calculator
• ✓Engraving-ready SVG dial plate exporter
• ✓Analemmatic correction curve plotter
• ✓Animated shadow movement preview