The holiest day is Shabbat (the sabbath).
The other holy days are
Rosh Hashanah
Sukkot
Passover
Shavu'ot.
Here is a list of almost all of the Holy Days and festivals:
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
See the attached Related Link.
Judaism's major Holy Days are:Passover/Festival of MatzahShavoutRosh HaShanahYom KippurSukkotSimchat TorahMinor holidays include:PurimLag B'OmerTisha B'vHanukkahSee the attached Related Link.
Judaism
1) The theological difference that leads to the difference in the observance of holy days by the various branches of Judaism is (on the one hand) the complete acceptance of the details of the Torah including its holy days (by Orthodox Judaism), or on the other hand, the belief that Torah-laws may be observed more leniently or adapted to modern or personal needs (by Liberal Judaism). 2) The cultural difference is that Jews in different countries have minor differences in customs such as what foods to seve on the holy days.
Most of the annual holy days are concentrated in the month of Tishrei. However, Judaism doesn't have the concept of a holy month.
The traditions of Judaism include its beliefs and its laws and practices, of which the holy days are one part. These all have the role of making Judaism what it is, since without them, Judaism becomes a mere cultural phenomenon that evaporates within a couple of generations (as history has shown). See also:Jewish beliefsJewish lawsThe Jewish festivals
Judaism is a religion, not a place.
Judaism was in what is now called Israel. Its holy book is the Tanakh, which contains the Torah and the prophetic books.
Judaism: Tanakh (Hebrew Bible) Christianity: Bible Islam: Holy Quran
Abraham was the founder of Judaism, in the Holy Land.
Judaism, Christianity, and Islam have all claimed the Holy Land for themselves.
The same as they do now, at the very least. God does not change His commands. See also:Jewish holy daysJewish traditions