This document summarizes the history of Hiroshima's peace memorial ceremonies from 1946 to 1948. It discusses how the first anniversary in 1946 involved a peace restoration festival and moment of silence. It then describes how the second anniversary in 1947 was declared an official holiday by the mayor and included a peace ceremony, memorial service, and peace festival. Finally, it notes that the third anniversary in 1948 continued these traditions and saw Mayor Hamai's declaration written on the new Peace Tower.