yöllisestä

Yöllinen is a Finnish adjective derived from the noun yö, meaning "night." It is used to describe something that occurs or exists during the night. The term can be applied to a variety of contexts, such as weather phenomena, activities, or states of being.

For instance, "yöllinen sade" refers to rainfall that occurs at night, while "yöllinen valvominen" describes staying awake through the night. It can also describe sounds heard in the darkness, like "yöllinen ääni" (a nighttime sound). The adjective conveys a sense of the nocturnal, the time when daylight has receded.

The concept of "yöllinen" is a common element in Finnish culture and language, often evoking feelings associated with the quiet, darkness, or potential mystery of the nighttime. It is a straightforward descriptor indicating something's temporal connection to the hours of darkness.