Formal:
* শুভ দিন (Shubho din): This is the most common and formal way to say "good day". It literally translates to "auspicious day".
* শুভ সকাল (Shubho shokal): This means "good morning" but can be used in a more formal setting to address someone for the entire day.
Informal:
* ভালো দিন (Bhalo din): This means "good day" and is a more casual and friendly way to greet someone.
* সুপ্রভাত (Suprabhat): This means "good morning" and is a more informal way to greet someone in the morning.
Other options:
* দিনটা কেমন যাচ্ছে? (Dinta kemon jachche?): This means "How is your day going?" and is a good way to start a conversation.
* আপনার দিনটা কেমন হচ্ছে? (Aponar dinta kemon hochche?): This means "How is your day going?" and is a more polite and formal way to ask.
The best way to choose which greeting to use is to consider the context of the situation and your relationship with the person you are speaking to.