"Morning to evening."
Translation:Maidin go tráthnóna.
Uiche is also evening (in the previous answer), so why is uiche not accepted here?
Yes but maidin go hoíche is a phrase, you'll never hear someone say maidin go tráthnóna.
If someone is asked to translate “morning to evening” correctly, then that person should say maidin go tráthnóna. The exercises here are not exclusively focused on translating common phrases.