▁calendar ▁starting ▁from ▁the ▁second ▁year . ▁Thus ▁years ▁ 2 , ▁ 6 , ▁ 1 0 ▁etc . ▁were ▁le ap ▁years ▁with ▁a ▁sixth ▁ep ag omen al ▁day . ▁The ▁first ▁day ▁of ▁the ▁first ▁month , ▁X anth ik os , ▁correspond ed ▁to ▁ 2 2 ▁March ▁in ▁the ▁Julian ▁calendar , ▁approximately ▁the ▁v ernal ▁equ ino x . ▁The ▁B ost ran ▁calendar — as ▁the ▁calendar ▁of ▁Arab ia ▁or ▁of ▁the ▁Arab s — is ▁one ▁of ▁six teen ▁that ▁appear ▁in ▁the ▁Florence , ▁Le iden ▁and ▁V at ican ▁hem er ologia . ▁ ▁The ▁B ost ran ▁calendar ▁was ▁used ▁in ▁texts ▁of ▁the ▁N ab ata e an ▁and ▁Palest in ian ▁Jewish ▁vari etes ▁of ▁Ar ama ic , ▁in ▁Greek ▁and ▁in ▁Arab ic . ▁In scri ptions ▁from ▁Arab ia ▁Pet ra ea ▁which ▁do ▁not ▁specify ▁the ▁era ▁but ▁simply ▁provide ▁a ▁year ▁number ▁are ▁usually ▁in ▁the ▁era ▁of ▁B ost ra . ▁In ▁documents , ▁this ▁era ▁is ▁usually ▁indicated ▁by ▁the ▁phrase ▁"[ year ] ▁of ▁the ▁province " ▁( e . g ., ▁Ar ama ic ▁l h pr ky ʾ ). ▁Sometimes ▁the ▁province ▁is ▁specified ▁by ▁the ▁name ▁" A rab ia " ▁or ▁" B ost ra " ▁( e . g . ▁Greek ▁ τ η ς ▁ ε π α ρ χ ε ι α ς ▁ Α ρ α β ι α ς , ▁t