Cham calendar, enchantment

How to find dates to celebrate New Year, Mbeng Muk kei, Ramadan, Ricaow, Muk Trun, Ong Trun, Talaih Ramadan, Talaih Waha . The use of charms to heal. 60 pages. Cham manuscript bound by threads; torn cover; written in Chinese ink, marker, ballpoint pen on industrial paper. Akhar Thrah and Arabic script. Size: 28cm x 14.5cm. These pages are blank: 002, 005, 023, 040, 059-060. Manuscript is deteriorating.