Kha b-nisan is a special day that is celebrated by some people in the Middle East, and it is also called Assyrian New Year.
Basically, it's like a big party to celebrate the beginning of a new year!
On this day, people clean their houses and wear new clothes to symbolize a fresh start. They also prepare special dishes, dance, and sing to traditional music.
The celebration lasts for almost a week and it's a time for families and friends to come together, have fun, and remember their culture and history.
So, if you hear someone talking about kha b-nisan, just know that they're talking about a festive occasion where people celebrate the start of a new year and fellowship with each other.