Rosh Hashanah is like a special birthday party for the whole world! It's a really important holiday in the Jewish religion. It happens on the first day of the Jewish month of Tishrei, usually in September or October.
On Rosh Hashanah, people go to synagogue (a special place to pray) to talk to God and say sorry for any bad things they did in the past year. They also ask God to help them have a good year with lots of blessings.
During the holiday, people eat special foods like apples dipped in honey to represent a sweet new year. They also blow a special horn called a shofar, which makes a loud, long, wavy sound. This helps wake up people's hearts so they can feel more connected to God.
Rosh Hashanah lasts for two days, and after it is over, there is another important holiday called Yom Kippur where people continue talking to God and making things right. It's a really special time of year where people can reflect on the past and ask for help to make things better for the future.