The Three Weeks Of Mourning Through The Eyes Of Jeremiah  Part 7  -  Why Do We Fast On The 17th Of Tammuz? -  English only.  Why do we begin our mourning on this day? What happened on the 17th day of the fourth month?    This is a rebroadcast of a sermon originally recorded July 21, 2024.  This year, 2025, the Three Weeks of Mourning begins with the fast of the fourth month on July 13, 2025. This is a partial fast, so we refrain from food and drink during the daylight hours of Sunday July 13.