Longest Night Of The Year 2025 Events. 15, 2025 (all night) just a couple of nights after its occultation by the full moon, mars will reach its full phase, called opposition.this happens only once every 26. Three supermoons are on tap this year in october, november and december.

Watch as the moon mingles. 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,.