Translation of Filz in German-English

In the that time of the year, when I used to go to school, I had to get up very early and leave the house at around seven o'clock in the morning. At this time it was still night, dark and cold outside.
Moreover, even if we know a lot about a certain culture, we will never be able to understand it in the same way and with the same depth as they do, since we have a very different point of view.
We returned before dusk, as we were afraid of not finding our ship in the dark. Once on the ship we decided to go for night swimming again in the open ocean. A few women on little boats approached us.