This is a linked open data (LOD) about date and time. "C.E. 2025 December 02" is a date of Julian/Gregorian Calendar (reformed in 1582) (Calendar ID: 101.1).
http://datetime.hutime.org/calendar/101.1/date/C.E._2025_December_02
hcal:101.1/date/2461011.5
hcal:101.1/date/C.E._2025_December_02
hcaldate:2461011.5
hcaldate:C.E._2025_December_02