Formal:
* ভালো থাকবেন (Bhalo thaaben) - This is the most formal way to say "Have a nice day" and is appropriate for elders and people in positions of authority.
Informal:
* ভালো থাকো (Bhalo thaako) - This is a more casual way to say "Have a nice day" and is suitable for friends and family.
* সুন্দর দিন কাটুক (Sundor din kaatok) - This literally translates to "May you have a beautiful day" and is a friendly and informal way to say "Have a nice day."
* ভালো দিন হোক (Bhalo din hok) - This translates to "May you have a good day" and is a simple and common way to say "Have a nice day."
Other options:
* শুভ দিন (Shubho din) - This means "Good day" and can be used as a farewell.
* আপনার দিন ভালো যাক (Apnar din valo jak) - This means "May your day go well" and is a polite way to wish someone a good day.
The best way to say "Have a nice day" in Bengali will depend on the context and your relationship with the person you are speaking to.