How do you say how was your day in Thai?

There are a few ways to say "How was your day?" in Thai, depending on the context and level of formality:

Formal:

* วันนี้เป็นอย่างไรบ้างคะ/ครับ? (wan ni pen yang rai bang ka/krap?) - This is the most formal way to ask, literally meaning "How is your day today?"

* วันนี้เป็นอย่างไรบ้าง (ka/krap)? (wan ni pen yang rai bang) - A slightly less formal version of the above.

Informal:

* วันนี้เป็นยังไงบ้าง (ka/krap)? (wan ni pen yang ngai bang) - This is a more casual way to ask, similar to "How's it going?"

* วันนี้เป็นยังไงบ้างจ๊ะ/ครับ? (wan ni pen yang ngai bang ja/krap?) - This is even more informal and friendly.

You can also use these expressions:

* วันนี้เหนื่อยมั้ย (ka/krap)? (wan ni neuay mai) - "Are you tired today?"

* วันนี้สนุกมั้ย (ka/krap)? (wan ni sanuk mai) - "Did you have fun today?"

Remember to add the appropriate honorific at the end of your sentence depending on the person you are speaking to:

* ka (คะ) - for women

* krap (ครับ) - for men

Example:

* วันนี้เป็นอย่างไรบ้างคะ? (wan ni pen yang rai bang ka?) - "How was your day?" (formal, to a woman)

* วันนี้เป็นยังไงบ้างครับ? (wan ni pen yang ngai bang krap?) - "How was your day?" (informal, to a man)