Formal:
* Kwaheri na siku njema: This is the most formal way to say "goodbye and have a nice day." It is suitable for someone you respect or are not close to.
Informal:
* Kwaheri, siku njema: This is a more informal version of the formal greeting. It is suitable for friends and family.
* Siku njema: This is a very common way to say "good day" or "have a nice day." It can be used in any context.
* Siku njema kwako: This means "have a nice day to you." It is slightly more personal than just saying "siku njema."
You can also use specific phrases depending on the time of day:
* Usiku mwema: This means "good night."
* Asubuhi njema: This means "good morning."
No matter which phrase you choose, it's always polite to end your conversation with a friendly greeting.