Converting the date to the format - on the backend or frontend?

Question

Laravel

I'm making a website with Laravel + Vue.js.
Laravel returns data from the database, among which there are values ​​in the form of a date and time.
The user in the browser needs to display this date in a certain format, for example "dmY H:s".
Do you think it's better to do it on the API side (using Carbon) or on the front end (using some momentjs)?
As I understand it, the latter is slower, but more manageable in the future.

Answer 1

The date is sent from the back in UTC.
At the front, it is formatted and displayed already in the local time zone.
For formatting, no third-party libraries are needed (Depends on the browsers you need to support)
https://developer.mozilla.org/ru/docs/Web/JavaScri...