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🍂 Photoperiod & Seasonal Rhythms (2D)

A 2D Canvas simulation of photoperiodism: real solar-declination astronomy computes day length by latitude and day of year, driving a biological response threshold like migration, hibernation or flowering.

Chronobiology & Circadian Rhythms2DEasy60 FPS📱 Mobile-adapted⇄ 3D version

⚙ Under the hood

A 2D companion to the seasonal-rhythms simulation, focused on photoperiodism: real solar-declination astronomy computes day length from latitude and day of year, and a threshold slider marks when day length crosses the point that triggers migration, hibernation, or flowering in real organisms. Animate through the year to watch the biological-response indicator flip on and off with the seasons.

photoperiodismchronobiologyastronomyday-lengthseasonalbiology

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