
🔴 A Martian Calendar With 30 Sols Per Month
🔴 A Martian Calendar With 30 Sols Per Month
This isn't meant to be an official proposal or a scientifically necessary calendar. It's simply a worldbuilding experiment: what would a Martian calendar look like if every month lasted exactly 30 sols?
Mars doesn't currently have an officially established month system like Earth does, so I decided to make one for fun.
The first 12 months keep the familiar Earth names, while the additional months use names inspired by Latin numbers.
🔴 Martian Calendar
| Month | Name | Duration |
|---|---|---|
| M1 | January | 30 sols |
| M2 | February | 30 sols |
| M3 | March | 30 sols |
| M4 | April | 30 sols |
| M5 | May | 30 sols |
| M6 | June | 30 sols |
| M7 | July | 30 sols |
| M8 | August | 30 sols |
| M9 | September | 30 sols |
| M10 | October | 30 sols |
| M11 | November | 30 sols |
| M12 | December | 30 sols |
| M13 | Undecember | 30 sols |
| M14 | Duodecember | 30 sols |
| M15 | Tredecember | 30 sols |
| M16 | Quattuordecember | 30 sols |
| M17 | Quindecember | 30 sols |
| M18 | Sedecember | 30 sols |
| M19 | Septendecember | 30 sols |
| M20 | Vigintember | 30 sols |
| M21 | Unvigintember | 30 sols |
| M22 | Duovigintember | 30 sols |
| M23 | Tresvigintember | 8 sols + 14h 12m 37s |
Note: A sol is one Martian solar day. Since a Martian year is slightly shorter than 23 × 30 sols, the final month is shorter to account for the remaining time.
I'm mainly curious what you think of the concept and whether you would design the Martian calendar differently. 🔴🪐