Dark-sky calendar for Plain View
The long view: when the sky gets truly dark and how much moonlight you will have to work around. Cloud detail lives on each night's forecast page.
December 2026
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Moonless windows account for the Moon's position during darkness. Some high-latitude dates have twilight rather than full darkness. Calculations are prepared in the background; weather is available only within the provider's forecast horizon.
Plan around the Moon
If you want the Milky Way, aim for the week around new Moon. If you want crater detail, any clear night in the waxing half works.
Check the weather closer in
Cloud forecasts are useful for about a week. Use this calendar to pick a target date, then return to the city page two or three days out.