Astronomy & Space

Happy New Year on Mars

How the science connects

Orbital mechanicsPlanetary science

AI Insight

On September 30, 2026, at 08:16 UTC, Mars will complete one full orbit around the Sun and begin a new Martian year. This orbital milestone marks the passage of approximately 687 Earth days, which constitutes one complete year on the Red Planet. The announcement comes from the European Space Agency's space science division.


Tracking Martian orbital periods is essential for planning space missions, coordinating rover operations, and understanding seasonal changes on Mars that affect dust storms, polar ice caps, and potential future human exploration activities. This temporal marker helps scientists synchronize observations and mission timelines with Martian seasonal cycles.


Mars Express images combined to produce global Mars in colour

30 September 2026 marks the start of a new year on Mars. At exactly 10:16 CEST/08:16 UTC on Earth, the Red Planet begins a new orbit around our Sun.

Source: Happy New Year on Mars