Can i have good evening and good morning tag

is there a way to put a tag that says good evening when its night and good morning when its morning time?

what i want to do is have a tag saying good evening or good morning its (current time)

Place one each in a morning, afternoon and evening text in the Opacity Box
Morning: $#DH#<12?100:0$
Afternoon: $#DH#>11&&#DH#<18?100:0$
Evening: $#DH#>=18?100:0$


thank you very much
learning little by little