How to say good afternoon in German language, study the correct pronunciation and look for the words analysis.
( ich wünsche einen) guten Tag means good afternoon in German language
Translating each word from German to English the meaning is:
( ich wünsche einen) guten Tag
(I wish [you] a) good day!
guten Tag good acc. day m. gut adj. good
Short for ich wünsche einen guten Tag! (“I wish [you] a good day!”), hence the accusative form of the adjective. Used primarily from late morning to late afternoon (i.e. about 10:00 to 18:00).