I don’t know, if all of you have noticed this problem.
But I have
I have tested this on different platforms like on Github, Netlify and on a server too.
If we use Github, then it shows all the blog post, even if we add the future date in the blog post.
If we use Netlify or any other service (where _site directory is used by servers) then if we publish a blog now and add the today’s date in the yaml data, then the blog shows up after two days.
I hope, you have understood what I am trying to say