Calendar names

The French calendar has several names:

0:

Republican Calendar

Calendar of Reason 
French Revolutionary Calendar 

Romme calendar

New calendar

Jacobin calendar

Equinox calendar

There are two related calendars:

1:

Rural Calendar

d’Eglantine calendar

Plant calendar

2:

Reformed calendar

Delambre calendar

Algebraic calendar

Note that Romme was the force behind the Republican Calendar, while Delambre was responsible for the reform. 

21 Ventôse year CCXXXI, mandrake day @ 4h 39m 26s PMT