Ibrāhīm Al-Filibbīnī
11 months
Iblis cried loudly four times, first when Allah declared him as cursed, second when he was thrown out, Thirdly, WHEN THE PROPHET ﷺ WAS BORN and fourth when Surah al-Fatiha was revealed
[Ibn Kathir in Al Bidayah wan-Nihayah,
Volume No. 2, Page No. 166]