The Calendar
What the atlas records for this date, across the traditions it covers.
Observed On This Date
Pilgrimage
10 Dhu al-Hijjah, with the days of tashriq to the 13th
Tabular reckoning; a local sighting may move it by a day.
This Week In Earth and Environment History
Dates for the Hebrew and Islamic calendars are the tabular reckoning, which is what a printed calendar prints. Communities that begin a month on a sighted crescent may differ by a day, and differ from one another by place.