This is a linked open data (LOD) about date and time. "29 ذو الحجة 1123" is a date of Hijri Calendar-TEST (Calendar ID: 103.1).
http://datetime.hutime.org/calendar/103.1/date/29_ذو الحجة_1123
hcal:103.1/date/2346390.5
hcal:103.1/date/29_ذو الحجة_1123
hcaldate:2346390.5
hcaldate:29_ذو الحجة_1123