If you're writing a lot of content on your WordPress site, you will need an easy way to plan your posts.
An Editorial Calendar provides a single screen where you can see all the content you're going to publish. Ideally, the Editorial Calendar will help keep you organized in a busy schedule.
Think of an Editorial Calendar as a timetable for your content.
If you're a WordPress user, there are several Editorial Calendars that integrate directly into WordPress. These calendars will show your planned WordPress posts and allow you to schedule new content.