I thought the zodiac months start on the 21st-ish of the numbered months. They would be two different systems of marking time in month-long periods. To unsubscribe from this list, send mail to lojban-list-request@lojban.org with the subject unsubscribe, or go to http://www.lojban.org/lsg2/, or if you're really stuck, send mail to secretary@lojban.org for help.