Final answer:
The last day for Mayor DiBlasio to file a claim against Billy Joel for damages would depend on the statute of limitations for personal injury and/or property damage claims in the jurisdiction where the incident occurred.
Step-by-step explanation:
In this scenario, the last day for Mayor DiBlasio to file a claim against Billy Joel for damages would depend on the statute of limitations for personal injury and/or property damage claims in the jurisdiction where the incident occurred.
The statute of limitations sets a time limit within which a lawsuit must be filed. Once that time limit expires, the injured party may lose the right to seek compensation.
Since the specific jurisdiction is not mentioned in the question, it is not possible to provide an exact date. It is recommended that Mayor DiBlasio consult with an attorney to determine the statute of limitations applicable in their jurisdiction and ensure that their claim is filed within the required time frame.