Judit, Härnu is a concatenation of the Swedish "här", meaning "here", and "nu", meaning "now". So it means "Here and Now", as in:

"Here and now, what matters the most?" "What is going on in the world, right here, right now?
"Here and now, what is the most important thing you have to share with the world?"

The word Härnu is a concatenation of the Swedish "Här", meaning "Here", and "Nu", meaning "Now".