I have joined free trail campaign from service app on Google Play Store.
After starting a free trial from the Google Play Store, in order to prevent charges for the annual subscription fee, you must cancel before the trial period ends, up to 24 hours in advance.

Which of the following understandings about cancelling before the trial period ends is correct?

Example: Free trial period is 2024/07/22 22:24:51～2024/07/25 22:24:51

① Do I need to cancel by 22:24:50 on 07/24?
② Do I need to cancel by 00:00:00 on 07/24?

Thank you