title: How to find timezone offset in UTC using Timezone name and Region in javascript
body: <p>I am fetching user's calendar timezone from <strong>Google</strong> and <strong>Microsoft</strong>. Google provides the timezone region in its <strong>calendar API</strong> response:
  <code>timezone: Asia/Kolkata</code></p>
  
  <p>While <strong>Microsoft Graph API</strong> provides timezone details like this <code>timezone: 'Indian Standard Time'</code> 
  I want to find Timezone <code>offset</code> in seconds to perform some operations on date object.</p>
  
  <p>Is there a different way or some source from where I can get all these details in the form of <strong>csv</strong> or <strong>json</strong> which can be imported in a database table and can be used for further operations?</p>
  
  <p>PS: I had a look at some examples from <code>moment.js</code> but didn't find it helpful for my use case</p>