The fifth day of the week, following Thursday and preceding Saturday. The kanji '金' (kin) means gold or metal, associating it with the planet Venus. It's widely celebrated as the end of the standard work or school week, leading into the weekend.

週(しゅう)の五(いつ)日(か)目(め)で、木(もく)曜(よう)日(び)の次(つぎ)に来(く)ます。「金(きん)」の字(じ)は金(きん)星(せい)を表(あらわ)し、週(しゅう)末(まつ)の前(ぜん)日(じつ)です。