I would say that the main festival of the Jews is Shabbat as it is celebrated every week (yes just because it is followed every week does not make it any less ofa festival). It is the most important festival in family life and family is the center of Judaism. However Orthodox and Reform Judaism may have different thoughts on this.
Passover is the most widely observed holiday (even among secular Jews).
Shabbat happens every week and is an defining holiday of Judaism.
Of course you will also have those who will answer Yom Kippur because it is the holiest day of the year ... it really depends on who you ask and how they approach Judaism.
By the way, all answers are correct.
The holiest Jewish holiday is Shabbat, which occurs every week. Here is a list of almost all of the major and minor holidays:
1 Rosh Hashanah - The Jewish New Year
2 Aseret Yemei Teshuva - Ten Days of Repentance
3 Yom Kippur - Day of Atonement
4 Sukkot - Feast of Booths (or Tabernacles)
5 Shemini Atzeret and Simchat Torah
6 Hanukkah - Festival of Lights
7 Tenth of Tevet
8 Tu Bishvat - New Year of the Trees
9 Purim - Festival of Lots
10 Pesach - Passover
11 Sefirah - Counting of the Omer
12 Lag Ba'omer
13 Shavuot - Feast of Weeks - Yom HaBikurim
14 Seventeenth of Tammuz
15 The Three Weeks and the Nine Days
16 Tisha B'av - Ninth of Av
17 Rosh Chodesh - the New Month
18 Shabbat - The Sabbath
19 Yom HaShoah - Holocaust Remembrance day
20 Yom Hazikaron - Memorial Day
21 Yom Ha'atzmaut - Israel Independence Day
22 Yom Yerushalaim - Jerusalem Day
Major festivals/occasions:
Fast days:
Reasons for the holidays:
Every one of them has as its purpose "remembering the Exodus from Egypt" (as stated in our prayers and the kiddush over wine). In addition, Passover is a Thanksgiving to God for the barley-harvest, Shavuot is a thanksgiving to God for the wheat-harvest, and Sukkot is a thanksgiving to God for the ingathering of grain. (See: more about Sukkot)
Shavuot also celebrates the Giving of the Torah on Mount Sinai, and Sukkot commemorates God having protected us in the wilderness.
It may also be noted that it is instinctive and a moral and emotional need to celebrate in front of God every so often. This was Cain's motivation in making his offering in Genesis ch.4 without having been commanded.
Had God not given us the Torah-festivals listed above, we might instinctively seek out those of the Canaanites, which the Torah warns against (Exodus 34:15) immediately before listing the Jewish festivals (in the following verses).
There's no such holiday or concept in Judaism.
New year's is the main holiday in greece .
Yom Kippur
Kwanzaa is a Jewish holiday celebrated in december.
Reformed Judaism believes that the Bible is the main source for the rules of Judaism.
Moses.
Israel.
The Torah.
JUdaism
There is no such holiday called 'Haman'. Haman is a character in the story of Purim.
Judaism.See also:The origins of Purim
Christmas