Is zakaat al-fitr due from one who did not fast in Ramadaan because of a valid excuse?

Giving meat for zakaat al-fitr

He forgot to pay zakat al-fitr before the Eid prayer

Does the father have to pay zakaat al-fitr on behalf of his children if they live with their mother?

Is paying zakaat al-fitr obligatory for someone who only prayed on the last day of Ramadan and did not fast?

Should he pay zakaat al-fitr on behalf of an orphan on whom he is spending?

He cannot find anyone who is entitled to zakaat al-fitr

He did not pay zakaat al-fitr; should he pay it now?

He become Muslim on the last day of Ramadaan – does he have to pay zakaat al-fitr?