There were 13 Jewish holidays and festivals observed in 2014, including Tu B'Shevat, observed on January 16; Purim, which was observed from March 15 through 16; Passover, which was observed from April 14 through 22; and Second Passover, which was observed on May 14. Lag B'Omer was observed from April 15 through June 3 and Shavuot was observed beginning at sunset on June 3 and ending at nightfall on June 5.
The Three Weeks, which is a time of mourning for the exile of the Jewish people and the Holy Temple's destruction, was observed from July 15 through August 5. The 15th of Av was celebrated on August 11 while Rosh Hashanah, which is the anniversary of the creation of Adam and Eve and marks the beginning of the Jewish new Year, was observed from September 24 through 26. Yom Kippur was observed from October 3 through October 4 and is the holiest day on the Jewish calendar. Sukkot was celebrated from October 8 to 15. Shemini Atzeret and Simchat Torah was celebrated from October 15 through the 17.
One of the most widely celebrated holidays of 2014 was Chanukah, which was observed from December 16 to 24. Chanukah commemorates the rededication of the Temple after it was occupied by Grecian armies.