This chapter describes how medieval Constantinople ceased to commemorate new local earthquakes on its liturgical calendar and instead crafted new ways of responding liturgically to seismicity. First it discusses new liturgical hymnography added to the commemoration rite for the quake of October 26, 740, and the establishment of that day as an annual “earthquake day” on which worshippers could reflect on natural disaster in the abstract, even as the hymns presented an incoherent set of conflicting theologies of earthquakes. It then examines how earthquakes from the distant past became potent ideological symbols in this period. It concludes with an examination of a prayer from the late eighth century created for use whenever earthquakes struck, a form of liturgical response that came to replace the practice of commemorating new quakes.