This is a linked open data (LOD) about date and time. "04 תמוז 5784" is a date of Hebrew Calendar-TEST (Calendar ID: 104.1).
http://datetime.hutime.org/calendar/104.1/date/04_תמוז_5784
hcal:104.1/date/2460501.5
hcal:104.1/date/04_תמוז_5784
hcaldate:2460501.5
hcaldate:04_תמוז_5784