Scheduling posts: post publishing date delays locally but not on GitHub Pages

[Maxx Turing]

When scheduling posts by altering the date attribute at the top of a markdown blog post, this works locally (the post does not show as published when the date is in future), but does not work after pushing to GitHub (will display post event when 'release date' is in the future)

Can this be fixed? It would be great to be able to schedule posts to release on certain dates.