add timezone clarification

Author: alifeee

index.html

@@ -101,7 +101,7 @@ <h3><a id="developers" href="#developers">Don’t think, just strip</a></h3>
 
           <h3 id="forty-height"><a id="timespan" href="#timespan">Wait… isn’t that 50 hours?</a></h3>
 
-          <p>That’s correct. CSS Naked Day lasts for one international day. Technically speaking, it will be April 9 somewhere in the world for 50 hours. This is to ensure that everyone’s website will be publicly nude for the entire world to see at any given time during April 9.</p>
+          <p>That’s correct. CSS Naked Day lasts for one international day. Technically speaking, it will be April 9 somewhere in the world for 50 hours, from 10:00, April 8 UTC+00:00 (00:00, April 9 UTC+14:00), to 12:00, April 10 UTC+00:00 (00:00, April 10 UTC-12:00). This is to ensure that everyone’s website will be publicly nude for the entire world to see at any given time during April 9.</p>
 
           <h3><a id="tools" href="#tools">Tools and plugins</a></h3>
 
@@ -136,4 +136,4 @@ <h3>Famous words</h3>
       </div>
     </div>
   </body>
-</html>
+</html>