It seems that not everybody knows about this WordPress feature which can be used to schedule your post to publish at your own chosen time. By default, wordpress publishes your post or page once you hit the Save As Draft or Publish button. But you can override the default setting and configure your post to publish at your own chosen time.

How to Schedule Your Post in WordPress
Let’s say you have written a post and you want the post to be published tomorrow by, let’s say, 1pm. To do this, log in to your WordPress dashboard and click Posts >> Add New
Follow instruction

Then go down to the post editor dashboard. Below the Save As Draft button, you will see publish immediately. Click on it and edit the time you want the post to be published. Upload your content to the dashboard and click update or publish post. The status of the post will appear as Scheduled instead of published. Once the time you set for the post reaches, wordpress will automatically publish it on your website.