The fortress at Ecbatana, the king’s summer home, was about 300 miles northeast of Babylon. This suggests Cyrus wrote the scroll in the summer of 538 BC.
Media was a mountainous area north of Persia and east of Assyria. The Kurds, descendants of the Medes, now inhabit this area.
Texts introduced by the term Memorandum were usually summaries listing the main facts of an event for the royal archives (compare Ezra 1:9–10).