Sangha Day commemorates a twenty-four hours when 1,250 monks, all from dissimilar places as well as on their on initiative, spontaneously came to pay homage to the historical Buddha.
In Pali, Makha is the advert of the 3rd lunar month, as well as Bucha agency "to venerate." On this day, Thai Buddhists get together at sunset inwards their local temples to participate inwards candlelight processions called Wian Tian. Ceremonies limited appreciation for the club of monks founded yesteryear the Buddha as well as for the Three Jewels -- the Buddha, the Dharma, the Sangha."
This text is from About.com - Buddhism.