Does Anybody at Iron Age Arad Really Know What Time It Is? Or, If You Can Write the Weekly Invoices, Can You Write the Bible?

At the 6^th century BCE Arad fortress Judean soldiers waited patiently for resupply every week. But new research shows that a week was really six days, which added up to a 360 day year. This may not have been a problem for military logistics but it certainly made sending birthday cards harder.