Timestamp microservice

I`ve just reached the timestamp project from the backend course but as I read and inspect the example I don’t understand what the program is supossed to do. Maybe is for my english level. I assume that is some kind of date formatter?
I know this isn’t a question about coding but if someone could explain me this I would aprecciate.

Pd: until now I’ve working on replit, but i prefer to work in vsCode if I make the projects and deploy its on heroku or similars it would pass the test?

Edit: I think that I got, there is no more funcionality that just use the parameters and routes to work with Date class and return a certain formated information, just that, I was overthinking about funcionality and purpose

Yes, you can deploy the project to Heroku and submit the Heroku url for the project.