 he means that at this time they have appeared have moved away and have dispensed with their lectures. and the opposition of canopus to the crossing with the rising of the fish for days that pass in october in the gloom of the night as if it were the remaining third of the night and canopus continues to delay its rising until it rises with the sunset.
يريد أنهم فى هذا الوقت قد بدوا، وانتجعوا، واستغنوا عن محاضرهم. ومعارضة سهيل الشعرى العبور مع طلوع السماك لأيام تمضى من تشرين الأول بجهمة من الليل، كأنه الثلث الباقى من الليل ولا يزال سهيل يتأخر طلوعه الى أن يطلع مع غروب الشمس.