Greasy Fork is available in English.
This script provides users with the capability to view seconds in the timestamps of Discord messages, allows users to view the time that has elapsed since a message was sent, and enhances the date formatting.
< Discord Timestamp with Secondsについてのフィードバック
Oh.. apparently I was using UK language which defaults to 24H format. I have since changed to US language and the problem is gone.
So that is your feedback for 24H format ha!
I am not sure why, but the time keeps multiplying
https://snipboard.io/ldF50g.jpg