Translation of sundown in German

I will add a feature to the dictionary builder tool, that marks a word as vulgar. The words that are shown in the tool are words that users did not find in our dictionary and a lot of them are vulgar.
Are you familiar with HTML tags? Besides, you have to test the file in a browser window before delivering, just to be sure that it is displayed correctly. Regarding the translation: The second choice is a little more colloquial than the first one.
I attended a Spanish course in Malaga, but I need more practice and speak more often (and write of course). Here in Germany it is a bit difficult to learn Spanish because we do not have the chance to practice.