How do you say good evening in Hindi language?

There are a couple of ways to say "good evening" in Hindi, depending on the formality and context:

Formal:

* शुभ संध्या (Shubh Sandhya): This is the most common and polite way to say good evening, similar to "good evening" in English.

Informal:

* नमस्ते (Namaste): This is a general greeting used throughout the day, but can also be used in the evening. It is more informal than Shubh Sandhya.

* संध्याकाल मंगलमय हो (Sandhyakal Mangalmay Ho): This literally translates to "May your evening be auspicious." It is a more poetic and well-wishing way to greet someone in the evening.

You can choose the appropriate greeting based on the situation and your relationship with the person you are greeting.