| 3 January 2026 | Supermoon | Moon Phase | Full moon peaks at 10:04 UTC; the Moon appears slightly larger and brighter than usual. |
| Night of 3–4 January 2026 | Quadrantid Meteor Shower Peak | Meteor Shower | Up to ~120 meteors/hour, favoring the Northern Hemisphere; the full moon washes out fainter meteors in 2026. |
| 17 February 2026 | Annular Solar Eclipse | Eclipse | The annular path crosses Antarctica; partial phases are visible from the far Southern Hemisphere. |
| 3 March 2026 | Total Lunar Eclipse | Eclipse | Visible from Asia, Australia, the Pacific, and western North America. |
| 20 March 2026 | March Equinox | Season | At 21:58 UTC the Sun crosses the equator heading north; day and night are nearly equal worldwide. |
| Night of 22–23 April 2026 | Lyrid Meteor Shower Peak | Meteor Shower | ~18 meteors/hour under a dark, light-pollution-free sky. |
| Night of 5–6 May 2026 | Eta Aquariid Meteor Shower Peak | Meteor Shower | ~50 meteors/hour; one of the best showers for tropical and Southern Hemisphere observers, peaking before dawn. |
| 31 May 2026 | Blue Moon | Moon Phase | The second full moon of May (UTC calendar); a calendar nickname only — the Moon does not actually turn blue. |
| 21 June 2026 | June Solstice | Season | At 08:25 UTC the Sun reaches its northernmost point, marking the start of Northern Hemisphere summer. |
| 12 August 2026 | Total Solar Eclipse | Eclipse | The path of totality crosses Greenland, Iceland, and Spain; partial phases are visible across Europe, northern Africa, and northeastern North America. |
| Night of 12–13 August 2026 | Perseid Meteor Shower Peak | Meteor Shower | ~100 meteors/hour, and 2026 is nearly moonlight-free as the peak coincides with a new moon; best from the Northern Hemisphere before dawn. |
| 28 August 2026 | Partial Lunar Eclipse | Eclipse | Visible from the Americas and parts of Europe and Africa. |
| 23 September 2026 | September Equinox | Season | At 00:06 UTC the Sun crosses the equator heading south. |
| Night of 21–22 October 2026 | Orionid Meteor Shower Peak | Meteor Shower | ~20 meteors/hour; debris from Halley's Comet, observable from both hemispheres. |
| Night of 17–18 November 2026 | Leonid Meteor Shower Peak | Meteor Shower | ~15 meteors/hour in the hours before dawn. |
| 24 November 2026 | Supermoon | Moon Phase | Full moon peaks at 14:53 UTC. |
| Night of 14–15 December 2026 | Geminid Meteor Shower Peak | Meteor Shower | ~150 meteors/hour, the strongest shower of the year; the young crescent moon sets early, leaving a dark sky. |
| 21 December 2026 | December Solstice | Season | At 20:50 UTC the Sun reaches its southernmost point, marking the start of Southern Hemisphere summer. |
| 24 December 2026 | Supermoon | Moon Phase | The largest and brightest full moon of 2026, falling on Christmas Eve. |