Aaj ka din kaisa ja raha hai? / Aap ka din kaisa guzar raha hai?

How to say “Aaj ka din kaisa ja raha hai” in English

When you want to say “Aaj ka din kaisa ja raha hai?” (or “Aap ka din kaisa guzar raha hai?”) in English, the natural, everyday way is “How's your day going?”. It fits greetings & goodbyes.