  By the twelfth century, northern European scholars gradually embraced Arabic
innovations in science and technology. England naturally developed into a
significant centre of the new learning in western Europe. Hereford, and
specifically its cathedral school, played a particularly important role in the
transition of English scholarship to the new learning. Hereford cathedral
developed into a focal point for high-level scholarship, attracting numerous
scholars from across the continent. Roger of Hereford stands out among his
peers as an enlightened scholar who made more practical use than most of the
full astronomical and astrological knowledge base available in England at the
time. A significant body of recent scholarship focuses on twelfth-century
ecclesiastical developments, including those relating to Roger of Hereford's
Computus. However, much less scholarly emphasis is placed on Roger's
astronomical calculations, particularly those which allowed him to establish an
important reference meridian at Hereford. Those aspects are the focus of this
paper.
