Home▸Space & Astronomy▸Armillary Sphere (2D): Sun-Path Chart, Meridian Section and Day Length

🌞 Armillary Sphere (2D): Sun-Path Chart, Meridian Section and Day Length

2D armillary sphere companion: a sun-path chart and meridian cross-section for any latitude, date, time and axial tilt, with declination, sunrise and day length from the sunrise equation and in-page numerical checks.

Space & Astronomy2DModerate60 FPS📱 Mobile-adapted⇄ 3D version

⚙ Under the hood

armillary spherecelestial spheresun pathdeclinationday length

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install