BnF - Latin 1168b

The Hours of Marguerite d'Orléans, Bibliothèque nationale de France MS Latin 1168b, is a lavishly illuminated Use of Rome book.  The calendar has some unusual features including a pattern of red-red-blue-blue, in additional to the more common red-blue.  The second page for March, f.3v, is a good example

BNF Latin 1168b f3v.jpeg