title: Convert date-time string to Date in excel
body: <p>I have  two columns with date-time values such as "2019-08-15T00:45:28.228Z". I want to convert each of them into date format columns, and then find number of minutes between the dates.</p>
  
  <p>eg:</p>
  
  <pre><code>
  | A1                       | A2                       | Date(A1) | Date(A2) | A2-A1 in minutes |
  |--------------------------|--------------------------|----------|----------|------------------|
  | 2019-08-15T00:45:28.228Z | 2019-08-15T00:55:28.228Z |          |          | 10               |
  | 2019-07-25T00:45:45.127Z | 2019-07-25T01:25:55.127Z |          |          | 40               |
  
  </code></pre>
  
  <p>I have not been able to convert the columns into a date format, because it has a time element as well, and all online examples seem to be only for date</p>