Calendar Sky

Calendar Sky. Below we pick out the best space calendars for 2025 that are available to buy right now. Explore a calendar archive of daily astronomy pictures showcasing the wonders of the universe.

This astronomy calendar of celestial events contains dates for notable astonomical events in 2025 including moon phases, meteor showers, eclipses, planetary alignments, occultations, oppositions, conjunctions,. How to use the sky calendar.