Today I published the application on producthunt at:
https://www.producthunt.com/posts/whenare
It's part of my plan to make my app and code more visible.
I followed advice from Levels' Make book to make the page more producthunt-ish.
It's challenging:
I think writing a "first comment" is essential: It's under my name, Laurent-the-human being, and it's easier to take time to describe concrete use-cases and people.
The experience is interesting, and I might reuse this approach of "writing a first comment" to get the tone and info I really want to share.