title: Floating date and time in ics file not working for yahoo calendar
body: <p>I am creating a calendar event for Google calendar, Apple calendar and Yahoo calendar. The event is specific to each individual customer and based on their address it will happen a specific time so we don't need any timezone conversion. The <code>.ics</code> file I created is displaying the time correctly for Google and Apple calendar but is displaying incorrect time for Yahoo calendar.</p>
  
  <p>So I have created an ics file with <code>DTSTART:20190415T154500</code> and <code>DTEND:20190415T16450</code> (<a href="https://www.kanzaki.com/docs/ical/dateTime.html" rel="nofollow noreferrer">as specified</a> date with local time) with no time zone specified. This works fine for Apple and Google calendar, but in the case of Yahoo it's displaying <code>Mon, 15 Apr, 11:45 AM - 12:45 PM</code> even though my Yahoo calendars time zone is same as my Google calendar. Below is my <code>.ics</code> file:</p>
  
  <pre><code>BEGIN:VCALENDAR  
  VERSION:2.0  
  PRODID:-//ZContent.net//Zap Calendar 1.0//EN  
  CALSCALE:GREGORIAN  
  METHOD:PUBLISH  
  BEGIN:VEVENT  
  SUMMARY:Specialist arrival window  
  UID:d5497571-a7fe-49e2-b0a5-d619e7f5c73a
  DTSTART:20190415T154500  
  DTEND:20190415T164500  
  LOCATION:101 XYZ BLDG 1\, SAN FRANCISCO\,CA\,94098    
  DESCRIPTION:Thanks for choosing our service!   
  X-ALT-DESC;FMTTYPE=text/html:&lt;html&gt;&lt;body&gt;Thanks for choosing our service.&lt;br&gt; 
   &lt;br&gt; Have to reschedule? sigin to change your appointment day and time. &lt;/body&gt; 
   &lt;/html&gt;  
  END:VEVENT  
  END:VCALENDAR     
  </code></pre>
  
  <p>Expectation is that irrespective of the time zone user should get the time as Monday, April 15⋅3:45 – 4:45pm. Any help will be greatly appreciated.</p>