title: What is the opposite of now.date.addDays?
body: <p>I am writing a little script whereby an action is fired if something has happened in the last few days. </p>
  
  <p>So I have a database of posts and their dates, I want to select all of those records that are within say the last 2 days. </p>
  
  <p>To select all that are within the last 2 days I need to know what the date was 2 days ago, so what is the opposite of now.date.addDays()?</p>
  
  <p>It doesn't seem to exist! there is no removeDays()</p>