What is incumbent upon one who has masturbated and watched pornographic videos during the daytime in Ramadan for several years, and is unable to count the days on which he did so?

The days on which ejaculation occurred due to masturbation in Ramadan must be made up. If the exact number is unknown, they must be estimated, and a number sufficient to clear one's conscience must be made up. This make-up must be completed before the next Ramadan, and it is not required to be consecutive. As for days whose corruption is doubted, they do not need to be made up. This applies if one knew that masturbation invalidates the fast. However, if one was ignorant of this, then their fast is valid.