Each Ukai house starts preparation before that, and ujo does fishing from the upper reaches to the lower reaches after the moon sets on the day of a waxing half moon and before the moon rises on the day of a waning half moon because Ukai is done only in the dark of night, avoiding moonlight.
鵜飼各戸はこれより前に準備するが、鵜飼は暗夜にかぎる漁法であるから、月夜を嫌い、上弦の夜は月入後、下弦の夜は月出前、上流から下流へ漁して下る。