Written by Alex Innanen, Atmospheric Scientist at York University Earth planning date: Friday, Oct. 9, 2026 Happy New Mars Year! We mark the start of a new year on Mars at the beginning of the northern hemisphere spring, or the vernal equinox.
Source: [NASA](https://science.nasa.gov/blog/curiosity-blog-sols-5036-5042-watching-the-clouds-go-by/)