Ambraseys (2009) notes that al-ʿUmari (f. 47r) gives only A.H. 381, but adds that the village which sank into the ground with great loss of life was called Duma, located next to Damascus rather than near Baalbek as [Yahya] al-Antaki reports, and gives Safar 17 A.H. 381 – a Friday corresponding to Tuesday, 5 May 991 CE – for the final aftershock. Ambraseys (2009) also observes that in al-ʿUmari’s text the reading of Duma is uncertain; it could be Dummar, or more likely Dumayr, an important station on the main road north of Damascus.