A year after the death of former president Nelson Mandela, South Africans have been remembering the man who led their country out of apartheid.<br /><br /> At an official ceremony held in Pretoria, Mandela’s widow Graça Machel urged her countrymen and women to carry on her husband’s legacy.<br /><br /> “Why today we honor his life? It’s up to each one of us, as he clearly said it on this 90th birthday: it is in the hands of each one of us to take what is your stake, to close the divisions which are still within us,” she said.<br /><br /> A weekend of commemorative events is planned including three minutes and seven seconds of bells and horn sounding, followed by three minutes silence to represent Mandela’s 67 years of public service.