| Month of the year | Labelled on astrolabe |
|---|---|
| 1. January : | Ianuari |
| 2. February : | Februa |
| 3. March : | Marci |
| 4. April : | Aprili |
| 5. May : | Maius |
| 6. June : | Iunius |
| 7. July : | Iulius |
| 8. August: | August |
| 9. September : | Septem |
| 10. October : | October |
| 11. November : | Novem |
| 12. December : | Decem |
The calendar is of the Western type. Every tenth day and the
last day of the month.The vernal equinox falls on the 9th day
of March. [N.B: Date is decimal as date of vernal equinox on
some astrolabes can be measured to within 0.25 of a day]Note
the error in January. Initially, the maker indicated that
there were 30 days in January. He then corrected it.
The calendar is labelled: