Viikonloppuun
Viikonloppuun is the illative singular form of the Finnish noun viikonloppu, meaning “to the weekend” or “into the weekend.” Viikonloppu is a compound of viikko (week) and loppu (end) and refers to the period commonly known as the weekend. The illative case, marked by the suffix -uun, expresses direction toward something or a deadline in time expressions.
Usage of viikonloppuun occurs when indicating movement toward the weekend, or when a time boundary is defined
Context and formality: The illative viikonloppuun is common in planning, scheduling, and formal notices, as well
Related forms include viikonlopussa (in the weekend) and viikonloppuksi (as the weekend). The base noun viikonloppu