The Pelican Sundial is the large pillar in the centre of Corpus' main quad and dates from 1579. The sundial is named after the gold-painted Pelican on an armillary sphere at the top of the pillar. "Pelican Sundial" is a misnomer, as the pillar contains 27 separate sundials. Nine of the sundials are found easily: four on each face of the square frustum beneath the pelican, four beneath each coat of arms on the cuboid and one facing south on the curved pillar shaft. The remaining sundials are found on the hollows and scallops surrounding the east and west arms. The symbols surrounding the sundials are used to reckon feast days and the signs of the Zodiac. The pillar shaft is covered by three tables: one for calculating the dates of the movable and fixed feasts and the Oxford and legal terms; one being a perpetual calendar and one for finding the time by moonlight.