Goeiedag
In Twi Asante, you say "Meda wo akye" to wish someone a good day. It is a common phrase used to express good wishes. The word "meda" means "I wish," and "wo akye" refers to "you a good day."
It is bom dia, which stand for "good day" or "good morning".
You say "Eu sou incrível"! Good day. Yuuki~
If, by "have a good one", you mean: Have a good day; you can just say "Bonne journée".
Sbah al kher
"Oli otya" is how to say good day in Luganda.
In Bahamian Creole, you can say "Good Day" as "Good marning" or "Good afternoon" as "Good evening".
To say "have a good day" in Hawaiian, you can say "Maluhia maika'i o kākou."
In Flemish, you can say "goedendag" which means good day.
You can say "Good day" or "Hello" to greet someone in English.
In Cree, you can say "Kiya pimatisiwin" to mean "Have a good day."
"Roja baş" is how you say "good day" in Kurdish.
buon pomeriggio
You can say "You too!" in response to someone wishing you to have a good day.
In Scottish (Scots) English, you can say "Hae a guid day!" to wish someone to have a good day.
Приятен Ден :) (Priaten Den) it means have a good day :P