This is a linked open data (LOD) about date and time. "17 חשון 5786" is a date of Hebrew Calendar-TEST (Calendar ID: 104.1).
http://datetime.hutime.org/calendar/104.1/date/17_חשון_5786
hcal:104.1/date/2460987.5
hcal:104.1/date/17_חשון_5786
hcaldate:2460987.5
hcaldate:17_חשון_5786