yes, they do. on the third of Tishri, a great leader of the jews was killed because he would not believe the slander that someone was coming to kill him
Tishri/tishrei = תשרי
September 11
Yom Kippur when God is said to forgive the Jews for their sins. i don't know the other one yet
Elul.
No.
There are 3 Hebrew months that begin with T: Tishrei (תשרי) [sometimes spelled Tishri] Tevet (טבת) Tammuz (תמוז)
Tishrei or Tishri (תשרי)
The three weeks are the period between the fast-day of the seventeenth of Tamuz and the fast-day of the ninth of Av. These three weeks occur in July-August and are a time when Jews mourn for the Destruction of the Temple.
1. Jews 2. Jews 3. Jews 4. Jews 5. Jews
Approximately 2/3 of the world's Jews live in Israel.
Jews, on account of being human, are subject to the same food and water deprivation limitations as everyone else, while accounting for personal variance. As a result, a Jew can survive around 70-80 hours without water and between 2-3 weeks without food. If you are asking specifically about how long Jews are required to fast on the fast days (of which there are 6 every year), such fasts last aroud 25 hours.
There is the fast of the firstborn where firstborn males are supposed to fast the day of the eve of Passover. Once Passover starts, there is no fasting.