title: When does the GitHub Gist API rate limit reset?
body: <p>I'm making unauthenticated calls to the GitHub Gist API, and I've exceeded the rate limit. Trying to browse to <a href="https://api.github.com/users/seisvelas/gists?page=1&amp;per_page=100" rel="nofollow noreferrer">https://api.github.com/users/seisvelas/gists?page=1&amp;per_page=100</a>, I receive:</p>
  
  <pre><code>{
    "message": "API rate limit exceeded for 187.188.105.159. (But here's the good news: Authenticated requests get a higher rate limit. Check out the documentation for more details.)",
    "documentation_url": "https://developer.github.com/v3/#rate-limiting"
  }
  </code></pre>
  
  <p>I browsed to the suggested <a href="https://developer.github.com/v3/#rate-limiting" rel="nofollow noreferrer">documentation</a>, and it suggested I take a look at the <code>X-RateLimit-Reset:</code> response header, so I did. My response headers look like this:</p>
  
  <pre><code>X-RateLimit-Limit: 60
  X-RateLimit-Remaining: 0
  X-RateLimit-Reset: 1566344009
  </code></pre>
  
  <p>Okay, so I'm allowed 60 requests. But the time for the Rate Limit Reset is given as <code>1566344009</code>...units. I'm not sure what these units are measured in. Milliseconds? If so, that would mean I'm allowed 60 requests every ~18 days. Which seems a bit conservative but not out of the question, but I'd prefer to know for sure what unit the rate limit time is being measured in.</p>
  
  <p>I didn't see any suggestions on the documentation, so any help is immensely appreciated!
  Thanks!</p>