Units Summary Mars' History
the optimal timekeeping system for Mars
developed by the Mars Time Group in 2001
Here is a calendar page for any regular 28-sol month, the first 23 months of any mir. Note the convenience of abbreviating the sol names to a single letter. Holisols are shown in white:
Here's a calendar page for Ophiuchus in a leap mir, when it has 25 sols. The last half-week is shown as holisols. Remember that the sol that comes after Terrasol, Oph-25, is Sunsol, Sag-01 - there's no Venusol, Mercurisol, or Jovisol in the last week of the mir.
Here's a calendar page for Ophiuchus in a short mir, when it has 24 sols:
If you have any questions or feedback about this website, please email Shaun Moss.