The Emerald Buddha also marks the changing of the seasons in Thailand, with the king presiding over seasonal ceremonies. In a ritual held at the temple three times a year, the decoration of the deity is changed at the start of each of the three seasons. The astrological dates for the ritual ceremonies, at the changing of the seasons, followed are in the first waning moon of the lunar calendar, months 4, 8 and 12 (around March, July, and November). Rama I initiated this ritual for the hot season and the rainy season; Rama III introduced the ritual for the winter season. The decoration which adorn the image, represent those of monks and the king, depending on the season, an indication of its symbolic role "as Buddha and the King", which role is also enjoined on the king who formally dresses the Emerald Buddha himself. The costume change ritual is performed by the king who is the most elevated master of ceremonies for all Buddhist rites. During the ceremony, the king first climbs up to the pedestal, cleans the image by wiping away any dust with a wet cloth, and changes the gold headress of the Emerald Buddha. The king then worships nearby while an attendant performs the elaborate ritual of changing the rest of the decorative garments. The king also sprays holy water, which is mixed with the water rinsed from the wet cloth used to wipe the dust of the image, upon his subjects waiting outside the ordination hall. Previously this was a privilege afforded only to the princes and officials who were attending the ceremony (uposatha) inside the ubosot.