Of/for

[Xinfu]

In the online system, a teacher says in the title of a post

-Deadline __ the final article

The article is something students have to hand in. Could we use of? (not for)

[Rusty]

Both work.

[Xinfu]

Thanks. Is of correct because it is in a title, not a complete sentence? Could we use of instead of for?:

-The deadline for applications is 30 April.
-The deadline for entries is noon Thursday.

[Rusty]

You switched from the singular to the plural in your complete sentences. There you cannot use 'of'. It is only when the singular form is used that 'of' is acceptable.

[Xinfu]

Excellent answer. Thank you.