The most common, universal greeting to use in India is **namaste** (sounds like "nuhm-uh-stay"). Greetings in India are not based on the time of day as they are in Bahasa Indonesia and Bahasa Malay. A simple namaste will do for all occasions day or night. Put your hands together in the pranamasana gesture for added respect.
I hope this helps. Let me know if you have any other questions.
