how to get the language code from timezone using moment

I am working in an Angular application in which the user can set preferred timezone. I have used owl datepicker. using dateAdapter its possible to do setLocale if i have the language code.

<input class="form-control" 
    placeholder="Date" [(ngModel)]=“inTime” 
     required ">
<owl-date-time #InTimeData></owl-date-time>

import { DateTimeAdapter } from 'ng-pick-datetime';

    private dateTimeAdapter: DateTimeAdapter<any>  ) { 
    this.dateTimeAdapter.setLocale(‘ja-JP);  //Japanese

how to achieve the same using timezone? if my zone is ‘Asia/Tokyo’, i need to get the language code ‘ja-JP’. Please provide me a solution

Source: Angular Questions