Khi nao dung Solar Analemma 3D Explorer

Use the Solar Analemma 3D Explorer when you need the noon-Sun figure-8 - and skip it when you need Earth seasons geometry or sidereal vs solar day length alone.

• Classroom demos of why fixed-time Sun photos form a figure-8
• Linking obliquity 23.44 deg and equation of time before sundial units
• One-screen refresher on EoT ~+/-16 min without a textbook plate

This page does not run an ephemeris, does not set a geographic latitude, and exaggerates curve scale for teaching.

Walk the controls in the step-by-step guide, or compare options in vs alternatives. Open the Solar Analemma 3D Explorer.

Last updated: Jul 16, 2026