The dates of several festivals have been based on the lunar calendar, so as Easter is at the West and that the real dates vary from year to year.
Makha Buja does occur in February at the nights of the complete moon of the lunar month and also commemorates the occasion when the Buddha’s disciples gathered to know him moan. You will find candlelit processions across the temple and also people give offerings to the monks.
Visakha Buja does occur through the night of the complete moon of the sixth lunar month (might) and marks god Buddha’s birth, enlightenment, and passing. Festivities occur at temples. You can visit https://www.m-culture.go.th/young/ewt_news.php?nid=343 to know about believe (which is also called as “ไปที่ https://www.m-culture.go.th/young/ewt_news.php?nid=343 เพื่อทราบเกี่ยวกับความเชื่อ” in the Thai language) and religion in Thailand.
Asanha Bucha commemorates the occasion when the Lord Buddha gave his first sermon in Benares along with his heritage of the Buddhist order of monks. It drops upon the complete moon of the lunar month.
The afternoon following is Wan Khao Pansa. This marks the beginning of Buddhist Lent (Pansa), when monks continue for three lunar weeks over the boundaries of the temple participated in meditation and prayer. Many teenage boys are ordained monks with this particular period of time, which starts with the rainy season.