What day of the lunar calendar should the night scene depicted in a night-mooring near maple bridge be? why

First of all, the night scenes depicted in the night parking near Fengqiao should be the seventh and eighth days of the lunar calendar.

Second, the reason:

A cold night

River maple, fishing lamp, and eternal dark sleep

Outside the city wall, from Hanshan Temple

The midnight bell rang and the passenger ship arrived.

It can be seen from these four poems that the author saw the moon set at midnight. According to the change of the moon phase, the first quarter moon rises at noon and sets at midnight, while the second quarter moon appears on the eighth day of the seventh lunar month.

So the time mentioned in the poem should be the seventh and eighth day of the lunar calendar.