▁and ▁the ▁Roman ▁leg ate ▁did ▁not ▁sit ▁at ▁B ost ra , ▁rather ▁the ▁ins cription ▁awk ward ly ▁comb ines ▁the ▁new ▁d ating ▁method ▁with ▁the ▁old ▁one ▁of ▁d ating ▁by ▁the ▁N ab ata e an ▁king ' s ▁reg nal ▁year . ▁ ▁There ▁is ▁some ▁uncertainty ▁whether ▁the ▁era ▁of ▁Arab ia ▁was ▁ever ▁used ▁outside ▁the ▁province ▁of ▁Arab ia ▁( rough ly ▁the ▁Trans j ord an , ▁the ▁S ina i ▁and ▁the ▁Neg ev ) ▁while ▁the ▁Roman ▁administration ▁was ▁still ▁int act . ▁In scri ptions ▁have ▁been ▁found ▁in ▁the ▁W adi ▁M uk att ab ▁in ▁the ▁S ina i ▁( AD 1 4 9 ▁and ▁ 1 9 1 ). ▁Some ▁ins cri ptions ▁have ▁been ▁tent atively ▁identified ▁as ▁dated ▁by ▁the ▁B ost ran ▁era ▁in ▁the ▁neighbour ing ▁provinces ▁of ▁Sy ria ▁to ▁the ▁north ▁or ▁J ude a ▁to ▁the ▁west . ▁A ▁Jewish ▁Ar ama ic ▁document ▁of ▁AD 1 1 1 ▁from ▁Mas ada ▁in ▁Jud ae a ▁written ▁in ▁Heb rew ▁letters ▁may ▁use ▁the ▁era , ▁but ▁David ▁Good blatt ▁doub ts ▁it . ▁ ▁The ▁use ▁of ▁the ▁era ▁spread ▁with ▁the ▁province ▁of ▁Arab ia ▁and ▁its ▁success ors . ▁The ▁ins cri ptions ▁of ▁ 3 9 7 / 8 ▁and ▁ 5 3 8 / 9 ▁are ▁from ▁ Ḥ arr ā n ▁and ▁ ʿ Am ra , ▁respectively , ▁places ▁not ▁incorpor ated ▁into