How the calculation works
Mars age = days since birth ÷ 686.971
sols = seconds since birth ÷ 88775.244
| Quantity | Value used |
|---|---|
| One Mars year (orbital period) | 686.971 Earth days |
| One sol (mean Martian solar day) | 88775.244 seconds, about 24 h 39 min 35 s |
Your next Mars birthday is the moment your count of Martian years reaches the next whole number. The date is shown in UTC, counting from midnight on your birth date.
Years and seasons on Mars
A Martian year is nearly twice as long as ours, so each season lasts roughly twice as long. Because Mars's orbit is more elliptical than Earth's, its seasons are also uneven in length. Scientists number Mars years starting from 1955, a convention used to compare dust storm seasons over time.