title: Change date of git tag (or GitHub Release based on it)
body: <p>I'm adding <a href="https://help.github.com/articles/creating-releases" rel="noreferrer">Releases</a> to my projects on GitHub by adding tags to various commits in the Main branch. </p>
  
  <p>In one of my projects I did not add the tags to the commits in chronological order. (I found obvious commits and tagged them, and then I found less obvious, <em>older</em> commits and tagged them.)</p>
  
  <p>Now <a href="https://github.com/Phrogz/docubot/releases" rel="noreferrer">GitHub is showing</a> v1.0.1 as current, with v0.7.0 preceding it, and v1.1.2 preceding <em>that</em>. </p>
  
  <p>It appears to use the date on a tag's creation as the Release date instead of the commit that is being tagged. How can I edit my tags so that their dates are the same as the commit they are tagging?</p>
  
  <p><a href="https://i.stack.imgur.com/9cLWb.png" rel="noreferrer"><img src="https://i.stack.imgur.com/9cLWb.png" alt="mapping of releases and dates between gitk and GitHub"></a></p>