When to Use Twilight Types 3D Explorer - Best Sessions and Limits
Open Twilight Types 3D Explorer when you need to grade the twilight transition zone itself into its three officially defined bands and find which latitudes and seasons get continuous "white nights" - not a live day/night map or a specific eclipse's timing.
A twilight-banding lesson
A lesson starts when you sweep the depression dial end to end to see all three bands in order, then move the latitude slider through the June-solstice season button to find the latitude where the green marker first drops into "white night" territory.
Sessions this explorer does not fit
Sessions this page does not fit are watching a live approximate sun position sweep a rotating Earth - use the Earth 3D Globe: Live Day/Night Map for that - or exploring why axial tilt causes the seasons - use the Seasons on Earth 3D Explorer. Walk the controls in the step-by-step guide.
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