Man, that took some time to find in the docs:

Temporal.ZonedDateTime.prototype.withTimeZone() [0], which allows to convert from one timezone to another

   const meetingTime = Temporal.ZonedDateTime.from(
     "2021-08-01T12:00[America/New_York]",
   );

   const meetingTimeInParis = meetingTime.withTimeZone("Europe/Paris");
 
   console.log(meetingTimeInParis.toString()); // 2021-08-01T18:00:00+02:00[Europe/Paris]

To me, timezone translations as well as durations are such an essential thing which libraries must handle, and it's nice to see that Temporal handles both. But it looks like Temporal.Duration doesn't offer a custom `format` function, for example `duration.format('H\hmm\m')` or something like that to format a duration into 1h03m.

[0] https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...