However, it's important to understand the context because it could have different meanings depending on how it's used. Here are some possibilities:
* A specific time: It could refer to a particular Friday night, for example, "We'll meet at the party ni ale Friday."
* A general time: It could refer to Friday nights in general, for example, "Ni ale Friday, we usually go out to eat."
* A metaphorical expression: It might be used metaphorically to describe a specific event or feeling that happens on a Friday night, such as "Ni ale Friday, my worries always seem to disappear."
Without more context, it's difficult to provide a precise meaning.
Can you please give me more information about how you encountered this phrase?