In Baroque works, the strongest 14 male members (including the unluckies) are named after numbers: Mr. 13, Mr. 12, Mr. 11 ... Mr. 0.
The female counterparts for Mr. 13 through Mr. 8 are named: Miss Friday, Miss Saturday, Miss Thursday, Miss Tuesday, Miss Wednesday, and Miss Monday.
From then on, they are named after holidays: Miss Fathers Day, Miss Mothers Day, Miss Valentine, Miss Merry Christmas, Miss Golden Week, Bon Kurei/Bon Clay (don't ask), and Miss Double Finger (New Years Day).
The final female, however, is Miss All-Sunday who is Nico Robin. What is "All-Sunday" referring to? Is it a holiday? If it is just meant to be Sunday, why is the "All" there?