A two-day celebration beginning on the first day of Tishrei, FTP, name this Jewish holiday that commemorates the New Year.
The day before this holiday sees many people perform the Hatarat Nedarim.  The unrelated Fast of Gedaliah typically occupies the day after this holiday.   One practice on this holiday involves reciting a section of Micah and throwing bread into a body of water in the ritual known as tashlikh.  The Avinu Malkeinu prayer is recited during the Ten Days of Repentance following this holiday.  Apples and honey are typically eaten on this holiday, which is underscored by 100 blasts from the shofar.  A two-day celebration beginning on the first day of Tishrei, FTP, name this Jewish holiday that commemorates the New Year.
The day before this holiday sees many people perform the Hatarat Nedarim.  
Rosh Hashanah