'Temny' does not mean 'late/night' but even if it would, it does not mean the bar is oficially called that name.
So can you confirm you have personally seen such name written on the bar? It's website does not have such a name yet, but it is in construction.

What does some https://untappd.com website not related to the bar proove? And oma.sk uses OSM data, so just shows what you have input, so it is no proof either.