In Ancient Persia, everyday of the months had a Name:

11th Day:
Khir (Khour)
Calligrapher: Jamal Abiri

12 Day:
Mah
Calligrapher: Jamal Abiri

13 Day:
Tir
Calligrapher: Jamal Abiri

14th Day:
Goush
Calligrapher: Jamal Abiri

15th Day:
Dey-be-Mehr
Calligrapher: Jamal Abiri

16th Day:
Mehr
Calligrapher: Jamal Abiri

17th Day:
Soroush
Calligrapher: Jamal Abiri

18th Day:
Rashan
Calligrapher: Jamal Abiri

19th Day:
Farvardin
Calligrapher: Jamal Abiri

20th Day:
Varahram
Calligrapher: Jamal Abiri