Jamieson, Fausset & Brown, on Esth 6:4

“And the king said immediately: Who is in the court? for Aman was coming in to the inner court of the king’s house, to speak to the king, that he might order Mardochai to be hanged upon the gibbet which was prepared for him.”

“Now Haman was come into the outward court--This was early in the morning. It is the invariable custom for kings in Eastern countries to transact business before the sun is hot, often in the open air, and so Haman was in all probability come officially to attend on his master.”

Imported from an open dataset — not yet checked against the printed edition.