Solar Oscillator
This animation visualizes the changing solar terminator, the boundary between day and night, at roughly 5.2 million times real speed. Each frame advances the simulated date by twenty-four hours, making the seasonal shifts in daylight visible as a blue region for night and white for day. Built with d3.v3, it uses `d3.geo.circle` to calculate the terminator, a Kavrayskiy VII projection, and a `d3.timer` to drive the animation. It overlays the night path on top of land and graticule layers from a 50m world TopoJSON file.
AI-generated descriptionIn honor of the vernal equinox, this animation shows the progression of the solar terminator at approximately 5.2 million times its normal rate. Each frame of the animation advances twenty-four hours ahead of real-time so that the seasonal changes of the solar terminator are visible. The blue region is night; the white region is day. Best accompanied with the theme song from Buck Rogers.