# months
M(w)_1=Muharram
M(w)_2=Safar
M(w)_3=Rabiʻ I
M(w)_4=Rabiʻ II
M(w)_5=Jumada I
M(w)_6=Jumada II
M(w)_7=Rajab
M(w)_8=Shaʻban
M(w)_9=Ramadan
M(w)_10=Shawwal
M(w)_11=Dhuʻl-Qiʻdah
M(w)_12=Dhuʻl-Hijjah

# eras
E(w)_0=AH

E(a)_0=AH

E(n)_0=AH