No one disapproved my calculation.
This link however approves the calculation for 2160 but shows many more years.
www.greatdreams.com...
The Thirteenth Sign? Ophiuchus is often mistakenly called the 'thirteenth sign of the zodiac' because the sign is thought of as an additional sign to the the twelve Tropical or Sidereal signs.
Originally posted by PrplHrt
I'm not very good with math, so do with this what you will. Seems to me I read somewhere, recently, that there were originally 13 signs in the Zodiac. There was another sign between Scorpio and Sagittarius, but I don't remember what it was called.
Can you recalculate based on the number 13?
PrplHrt
