In the practice of Christianity, canonical hours mark the divisions of the day in terms of periods of fixed prayer at regular intervals. The practice of daily prayers grew from the Jewish practice of reciting prayers at set times of the day. This practice is believed to have been passed down through the centuries from the Apostles, with different practices developing in different places. As Christian monasticism spread, the practice of specified hours and liturgical formats began to develop and become standardized. Around the year 484, the Greek-Cappadocian monk Sabbas the Sanctified began the process of recording the liturgical practices around Jerusalem, while the cathedral and parish rites in the Patriarchate of Constantinople evolved in an entirely different manner. In Orthodox practice today the Hours are four relatively brief prayer services of the Daily Cycle that mark the various principal hours of the day (First Hour 6 AM, Third Hour 9 AM, Sixth Hour 12:00 Noon, Ninth Hour 3 PM).