Calendar system containing 13 months. January, Febuary, March, April, May, June, July, Urbanuary, August,
September, October,
November, December.
Follows more closely the moon cycles. All months have 28 days, there is one day at end of year called Jayday which is in no month. Every four years there are two Jaydays to stay in line with leap year of the
Gregorian calendar.