@Usagi 22 May 2021 more from that month

IRIDESCENT 🌈☁️ Iridescent clouds, also known as rainbow clouds, appeared in the skies of Gapan City, Nueva Ecija on Thursday. Clark Joseph Angeles II started taking photos of the clouds at 5:30 PM until 6PM using his smartphone. (Photos courtesy of Clark Joseph Angeles II) Ctto: Philippine Star