Astrolabe Catalogue

 

The calendar is of the Western type. Every fifth day and the end of the month.The vernal equinox falls on the 21th 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]
The calendar is labelled:
Month of the year Labelled on astrolabe
1. January : JAN
2. February : FEB
3. March : MAR
4. April : APL
5. May : MAY
6. June : JUNE
7. July : JULY
8. August: AUG
9. September : SEPT
10. October : OCT
11. November : NOV
12. December : DEC
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