This is a linked open data (LOD) about date and time. "C.E. 1902 August 08" is a date of Gregorian Calendar (Calendar ID: 2.1).
http://datetime.hutime.org/calendar/2.1/date/C.E._1902_August_08
hcal:2.1/date/2415969.5
hcal:2.1/date/C.E._1902_August_08
hcaldate:2415969.5
hcaldate:C.E._1902_August_08