title: Wordpress: Scheduled category change (workflow). How to do?
body: <p>I think it is a common case:I have three categories: Past, Current, Upcoming.</p>
  
  <p>Now I write a post about next month's event. I put this post in Upcoming category.</p>
  
  <p>What I want is a scheduled category change.</p>
  
  <p>i.e.:</p>
  
  <p>This event runs from Dec 1 to Dec 10. From now till Nov 30, this post is in Upcoming category (I select this category when creating this post).</p>
  
  <p>On Dec 1, this post will be in Current category automatically, till Dec 10.</p>
  
  <p>On Dec 11, this post will be in Past category automatically.</p>
  
  <p>I did a search and did not find such plug-in.</p>
  
  <p>Basically, I want the publishing page to have two extra options:</p>
  
  <p>Option 1: Change to Category <strong>_ on _</strong></p>
  
  <p>Option 2: Change to Category <strong>_ on _</strong></p>
  
  <p>It sounds like a workflow question. I searched workflow related plugin but still with no luck.</p>
  
  <p>Any suggestion on how to implement this? I can write a plugin but I am new to WP. Could anybody suggest me which API/functions to use?</p>
  
  <p>Thank you!</p>