Millions of South African schoolchildren sang happy birthday to Nelson Mandela as he turned 93 Monday, while politicians and ordinary citizens did charity work to support his call to do good.
For the third year, at the request of his charitable foundation, July 18 is observed as Mandela Day, recognised by the United Nations as a global call to volunteer for good causes for 67 minutes - representing each year of Mandela's life in active politics.
The nation's 12.5 million schoolchildren sang "Happy Birthday" before starting class Monday, with television and radio stations urging the nation to join in the special rendition of the song, given an African twist by a local composer.