For example: It's 6:15.
六時十五分です
Could I just say:
六時十五です
or just:
六時十五
Japanese Language Stack Exchange is a question and answer site for students, teachers, and linguists wanting to discuss the finer points of the Japanese language. It only takes a minute to sign up.
Sign up to join this communityI'm a native Japanese. It depends on the context. When you're talking to a friend/family, you sometimes omit it but rare. Most cases, you add 分 especially if it's in written form or formal conversation. For 六時十五です, you should add 分. It makes sense but it sounds off.