Yes, there was a publicized event in Jerusalem on September 24, 2025, where 100 shofars (trumpets) were blown simultaneously as part of a special Rosh Hashanah (Jewish New Year) ceremony1. This event was described as unprecedented in over 3,000 years of Israel's history, with 100 priests each holding a shofar and blowing them together at the same moment before a global audience1. The event coincided with Rosh Hashanah, also known as the Feast of Trumpets, a day prominently associated with shofar blowing in Jewish tradition23.

Traditional synagogue practice involves blowing the shofar in a structured sequence totaling 100 blasts, but typically performed by a single shofar blower during services2. The 2025 Jerusalem event was unique in the simultaneous participation of 100 individuals, and reports emphasized its prophetic and symbolic significance1.

There is no confirmation in mainstream religious or news sources that such a mass shofar-blowing by 100 priests is a longstanding or established tradition; rather, it appears to have been a special, singular event marking Rosh Hashanah and broadcast globally for its significance12.