This is a linked open data (LOD) about date and time. "C.E. 2025 March 12" 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_March_12
hcal:101.1/date/2460746.5
hcal:101.1/date/C.E._2025_March_12
hcaldate:2460746.5
hcaldate:C.E._2025_March_12