This is a linked open data (LOD) about date and time. "27 אב 5619" is a date of Hebrew Calendar-TEST (Calendar ID: 104.1).
http://datetime.hutime.org/calendar/104.1/date/27_אב_5619
hcal:104.1/date/2400283.5
hcal:104.1/date/27_אב_5619
hcaldate:2400283.5
hcaldate:27_אב_5619