If the election filing date is within the allowable window from the incorporation date, wouldn't the effective date also be 6/14/24, not 9//09/24?

"For a newly formed corporation, the election must be filed on or before the 15th day of the third month of the first tax year."

Example 2. Determining when the election becomes effective when a newly formed corporation elects S status: A newly formed corporation begins business on June 15, 2018, and decides to immediately elect S status. For the election timing rule, the company’s first month ends on July 14, and the company’s second month ends on Aug. 14. Therefore, the 15th day of the third month falls on Aug. 29, 2018, which is the deadline for the company to file its S election.

I think you might be late for 2024.