"Not visible tonight" for objects not visible from the current location

[AxelBoldt]

When clicking on a star in the southern sky that's not visible from my location, the web app reports "Visibility: Not visible tonight". I think this is slightly misleading, as the star is never visible from my location, not just tonight. Furthermore, those stars that are only visible during the day today will be reported with their correct visibility times, not with "not visible tonight". So this might confuse new users. I would suggest to write "Not visible from your location" instead.

[lulunac27a]

Maybe the star declination is north of 90 degrees south minus latitude for northern latitude, south of 90 degrees north plus latitude for southern latitude, which makes the star always invisible for the whole day.