title: DateTime Math 2 Hours Or Greater Since confirmation_sent_at Rails Devise
body: <p>Time and date math always seems to get the best of me. I want to write a check to verify it's been 2 hours or more since we sent the original devise confirmation email.</p>
  <p>I've tried different variations trying to use DateTime and time etc and I cannot figure it out and could use some help. confirmation_sent_at is a DateTime I believe. EX: <code>Tue, 17 May 2022 20:47:51.290039000 UTC +00:00.</code></p>
  <p>How do I check if its been &gt;= 2 hours since current_user.confirmation_sent_at . For testing purposes I've been using minutes and seconds fwiw 2.minutes.ago, 2.hours.ago etc.</p>