Pataphysical calendar

The pataphysical calendar is a calendar that is inspired by Alfred Jarry, the creator of 'pataphysics and the author of Ubu Roi.
The first version of the calendar was published in "L'Almanach du Père Ubu" in 1889. The second version was released in 1901 in the "L'Almanach illustré du Père Ubu". The calendar started to get used in the Collège de 'Pataphysique in 1948, after the death of Jarry.
The calendar has 13 months with each 29 days. The 29th day however, is not used, except for "29 Gidouille" (as an exception) and "29 Gueule" in a leap year. The months always start on a Sunday, so that every month has a Friday the 13th. The names of the days are equal to the general calendar (the French names are mostly used), except for the 29th (the imaginary day), which name is "Hunyadi". 29 Gueule is called "Hunyadi gras" (fat hunyadi).
To make it not that hard for the reader, one places the vulgar (standard) date after the date.
Months.
The year has the following months:
The names are inspired by the exceptional terminology and neologisms in the work of Jarry. In his play, he wrote "merdre "instead of "merde", which means poop - "oneille" instead of "oreille", which means ear.
Calendar era.
The calendar era starts on 1 Absolu 1 EP (= "Ère 'Pataphysique"), the birth day of Alfred Jarry (September 8, 1873).
Saints.
The calendar has its own saints, like "the holy Guillotine, medic" (13 Décervelage = January 10), "the holy "Hieronymus Bosch (17 Clinamen = April 8) and "the Childbirth of the holy "Johanna Pausin (1 Merdre = May 18)