Evening is the time when the sky starts to get dark - usually around 6-8 PM.

Night is the time when it is dark and people are generally sleeping.

Say "Good evening" to say "hello" after 6:00 PM. "Good evening" is commonly used at restaurants, in a professional context, and in speeches (when you speak in front of a large number of people):

"Good evening, do you have a reservation?" (at a restaurant)

"Good evening, Tom. How are you?" (to a colleague)

"Good evening, ladies and gentlemen..." (in a speech)

In general, "good evening" is a little more formal. Friends don't normally say "good evening" to each other - they would say "Hi" or "What's up?" or another informal greeting.

Say "Good night" to say "goodbye" - when you are leaving to go home. Family members also say "good night" when they are going to bed.

"Good night, Janet. See you tomorrow." (at work)

"Good night, mom. I'm going to bed." (at home)

Fact
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