Formal:
* Nimma dinavannu hege iddi? (ನಿಮ್ಮ ದಿನವನ್ನು ಹೇಗೆ ಇದ್ದಿ?) - This is a very polite way to ask, directly translating to "How is your day?"
* Nimma dinavannu hege chaluvaagide? (ನಿಮ್ಮ ದಿನವನ್ನು ಹೇಗೆ ಚಲುವಾಗಿಡೆ?) - This is another polite option, meaning "How is your day going?"
* Nimma dinavannu hege idde? (ನಿಮ್ಮ ದಿನವನ್ನು ಹೇಗೆ ಇದ್ದೆ?) - This is a slightly less formal version of the first option.
Informal:
* Heegu iddi? (ಹೀಗೆ ಇದ್ದಿ?) - This is a very casual way to ask, literally meaning "How are you?" but is commonly used to ask about someone's day.
* Dinavannu hege? (ದಿನವನ್ನು ಹೇಗೆ?) - This is a more direct, informal way to ask "How's your day?"
In addition to these, you could also use:
* Ninna dinavannu hege iddi? (ನಿನ್ನ ದಿನವನ್ನು ಹೇಗೆ ಇದ್ದಿ?) - This is a less formal way to ask "How is your day going?" using the word "ninna" which is the informal equivalent of "nimma" (your).
Remember to adjust your choice of phrase based on your relationship with the person you are speaking to and the context of the conversation.