For The Love of Gor

 The Peoples of Turia and certain other southern regions officially celebrate their own new year on the day of the Summer Solstice. A ten day period of revelry follows, similar to the New Year celebrations in northern cities.

One could tell a Turian because he insisted on celebrating the New Year at the summer solstice, for instance.

Captive of Gor Book 7 Page 160

Most Gorean cities use the Spring Equinox as the date of the New Year. Turia, however, uses the Summer Solstice.

Marauders of Gor Book 9 Page 58