By the 100s, writers speak of setting aside times for prayers at 9 am, noonday, and at 3 pm. As monasticism developed, these became the hours of the "little offices" of Terce, Sext, and None. The 1979 Book of Common Prayer restores an abbreviated Noonday office.
The form of the Noonday office provided here includes a fuller version of the Prayers than is included in the Prayerbook office. Noonday Prayer is simple and reflective, and a great way to steep one's day in prayer.