Moment Timezone returns correct timezone but with wrong spelling

Question

I am using MomentJS Timezone. However, when I do moment.tz.guess(), it returns my timezone with wrong spelling.

const timezone = moment.tz.guess();
console.log(timezone); //returns Asia/Katmandu instead of Asia/Kathmandu

Yes, I could've just edited the js file and corrected the spelling but I'm afraid it's same for other countries too. Since I will be unaware of it, this might degrade the user experience!

Is this behavior expected or is there any way to fix it?

SEE THIS: Correct Timezone List [Moment] [Javascript] [PHP] [Internationalization API]

Answer 1

I am using moment 2.2.22 and 0.5.17 data, here is the result I found.

var timezones = moment.tz.names();
console.log(moment.tz.guess());
for (var i = 0; i < timezones.length; i++) {
  var node = document.createElement("LI");
  var textnode = document.createTextNode(timezones[i]);
  node.appendChild(textnode);
  document.getElementById("mm").appendChild(node);

}

#mm span {
  width: 100%;
}

<script src="https://momentjs.com/downloads/moment.min.js"></script>
<script src="http://momentjs.com/downloads/moment-timezone-with-data.min.js"></script>
<ul id='mm'></ul>

My result showed that there are two names coming for same timezone (Kathmandu and Katmandu), which has written like Asia/Kathmandu|Asia/Katmandu (one updated second obsolete). After researching slight a bit I found this is because obsolete timezone and chrome behaviour this issue will not occur on Firefox or any other browser.

This issue is also not going to be resolved by developers as this doesn't create any problem. This is a known Chrome behaviour that leads to Moment making an incorrect guess. The Moment development team is uninterested in developing a workaround. More info can be found here.

So I would suggest you use string and format it according to your need and suggested on the previous answer.

Note

Please test the example in other browsers as well.