title: How to show one hour later from now or one hour before now in ruby
body: <pre><code>x = Time.now
  y = 1.hours.from_now
  z = 1.hours.before_now
  </code></pre>
  
  <p>i'm sorry if this question too stupid. i want to know an effective way to show one hour before and after now in ruby.
  thanks for watching and for helping.</p>