Sabrathan rules the first hour of the night in the Ars Paulina. The hour is named Omalharien.
The first night hour
Joseph H. Peterson’s transcription from Sloane MS 3825 describes dukes and other servants under Sabrathan, divided into orders. It lists selected chief and lesser dukes as part of the work’s sequence of nocturnal rulers.
Source
Ars Paulina, first hour of the night, displayed folio 138v, Peterson’s transcription.