The first registrations after Proclamation 4771 took place at various post offices across the nation on 21 July 1980, for men born in calendar year 1960. Pursuant to the Presidential proclamation, all those men born in 1960 were required to register that week. Men born in 1961 were required to register the following week. Men born in 1962 were required to register during the week beginning 5 January 1981. Men born in 1963 and after were required to register within 30 days after their 18th birthday.