datat.fi/example/_posts/2010-10-25-post-future-date.md

categories	date	last_modified_at	title
Post	9999-12-31	2017-03-09T12:45:25-05:00	Post: Future Date

This post lives in the future and is dated {{ page.date | date: “%c” }}. It should only appear when Jekyll builds your project with the --future flag.

jekyll build --future