Rosh Hashanah starts on Sunday night, September 29 and lasts two days, ending on Tuesday, October 1st. The celebration begins on the first day of the seventh month of the ecclesiastical year, known as Tishrei. Rosh Hashanah is the first of what is known as the High Holidays or High Holy Days, a ten-day period ending with Yom Kippur.
During Rosh Hashanah, Jews from around the world celebrate God's creation of the world.
The celebration is one of the most important of the Jewish calendar and marks the beginning of the calendar year according to the teachings of Judaism.
According to the Hebrew Bible, the holiday also commemorates the anniversary of the creation of the first man and woman – Adam and Eve.
This is also known as the inauguration of humanity in God's world.
Read more: Meaning of Yom Kippur: What is Yom Kippur? Can you say happy Yom Kippur?
How do you wish someone a happy Rosh Hashana?
If you want to wish someone a happy Jewish New Year, you can say "Shan Shan Tovah", which is Hebrew for "a good year".
You can also say "Shanah Tovah a 'tukah" which means "May you have a nice and sweet new year".
A more formal greeting is "L´hanah Tovah tikateivu v teichateimu", which means "A good year, and you can be inscribed and sealed (to receive blessings in the Book of Life)."
Another is "a good heart," which translates to "a good blessed year."
The Sephardic formal greeting is "Tizku Leshanim Rabbot" which means "that you deserve many years" to which people respond "Ne'imot VeTovot" which translates to "nice and good".
How is Rosh Hashanah celebrated?
Holiday traditions vary worldwide and from family to family, but a typical celebration involves a special prayer service in the synagogues.
During Rosh Hashanah's service, a traditional instrument made from the horn of a kosher animal – usually a ram – is played.
Another feature of Rosh Hashanah is charity or giving to those in need and this is known as tzedakah.
During Rosh Hashanah, good deeds are performed in the hope of God sealing the names of those who practice them in the "Book of Life."
Having your name sealed in the "Book of Life" would guarantee a happy year to come.
An important aspect of Rosh Hashanah's observances is food, which is often shared with friends and family, and special meals included as blessings.
During the celebration, sweet foods are consumed to ensure a sweet new year, as well as fruits such as pomegranates, which have recently entered the season.
Generally, a fish's head is meant to remind those who celebrate as the head rather than the tail – which means being a leader, not a follower.