title: Same formula, different results?
body: <p>You are my last chance to find a solution :
  I have 2 cells (<code>C6 &amp; D6</code>; <code>08:00:00 &amp; 12:26:00</code>) and a simple formula (<code>=D6-C6</code>). This one is working properly but I have another one (<code>=IF(OR(C6="JF";C6="WE");"00:00";D6-C6)</code>) which is quite simple but as you can see on this photo :</p>
  
  <p>To help understand: <a href="https://i.stack.imgur.com/27oeQ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/27oeQ.png" alt="enter image description here"></a></p>
  
  <p>The result of this second formula is not quite the same as the first one...which is weird as they have the same end (<code>D6-C6</code>)...I need either an explanation of why and a solution to have the 4:26 end on the second formula. </p>
  
  <p>I've tried this one : (<code>=SI(OU(C6&lt;&gt;"JF";C6&lt;&gt;"WE");D6-C6;"00:00:00")</code>) but the result is the same (<code>0,184722222</code>).</p>