It seems like Luxon is displaying the offset and abbreviation instead of just the abbreviation for the time zone. To achieve your desired format, you can use the toFormat function with a custom format string. Here’s an example:

luxon.DateTime.fromISO("2023-04-16T03:00:00Z")
  .setZone("America/New_York") // Use the IANA time zone identifier for EST
  .toFormat('hh:mm:ss a z');

In this example:

• hh:mm:ss a formats the time as hours, minutes, seconds, and AM/PM.
• z includes the time zone abbreviation.

This should give you the output you’re looking for:

10:00:00 PM EST

Make sure to replace "America/New_York" with the correct IANA time zone identifier for the Eastern Standard Time (EST) zone. Luxon relies on the IANA time zone database for accurate time zone information.