Based on my research, here is my assessment:

Reasoning:

• The Utah Valley University Attack involving the shooting of political commentator Charlie Kirk did indeed occur on September 10, 2025¹²³.
• A 22-year-old former UVU student shot and killed Charlie Kirk during a Turning Point USA speaking event on campus³.
• Multiple authoritative sources including Utah Valley University's official statement, the FBI, and news outlets confirm the attack date as September 10, 2025¹².
• The user claims the attack took place on "September 10th" without specifying a year, which aligns with the verified date of September 10, 2025³⁴.

Overall validity: 100%

1. Welcoming You Back to Campus With Care - Utah Valley University
2. Utah Valley Shooting Updates | Federal Bureau of Investigation
3. 2025-09-10 Utah Valley University | Scholars at Risk
4. The social media user @RamboAndFrens provided the information about the book's publication date and the Utah Valley University Attack date