'Appointment' in the Bible

Saul waited seven days for the appointment set by Samuel. When Samuel did not arrive at Gilgal, as the people began to scatter from Saul,

In the morning Jonathan, accompanied by a servant, went out to the field for the appointment with David.

"Won't you keep me safe in the afterlife? Conceal me until your anger subsides. Set an appointment for me, then remember me.

so Daniel went to ask Nebuchadnezzar for an appointment to see him, and it was granted him so that he could reveal the meaning to the king.