Formal:
* આપનો દિવસ કેવો ચાલી રહ્યો છે? (aapno divas kevo chali rahyo chhe?) - This is the most formal way to ask.
* તમારો દિવસ કેવો ચાલી રહ્યો છે? (tamaro divas kevo chali rahyo chhe?) - This is a slightly less formal option, still polite.
Informal:
* તારો દિવસ કેવો છે? (taro divas kevo chhe?) - This is a casual way to ask a friend or someone you know well.
* શું ચાલી રહ્યું છે? (shun chali rahyo chhe?) - This is a very informal way to ask, similar to "what's up?" in English.
Other variations:
* આપનો દિવસ કેવો જાય છે? (aapno divas kevo jay chhe?) - This means "how is your day going?"
* દિવસ કેવો રહ્યો? (divas kevo rahyo?) - This means "how was your day?"
Choose the phrase that best suits the situation and your relationship with the person you're speaking to.