14. For private pilot operations, a Second-Class Medical Certificate issued to a 42-year-old pilot on July 15, this year, will expire at midnight on

Title 14 § 61.23 Medical certificates: Requirement and duration.

(d) Duration of a medical certificate. Use the following table to determine duration for each class of medical certificate:
...
(2) A second-class medical certificate
(iii) Age 40 or older — 24th month after the month of the date of examination shown on the medical certificate.