11 January 1974
Susan Rosenkowitz and her husband Colin bore the first sextuplets known to survive their infancy on 11 January 1974, in Cape Town, South Africa. The three boys (David Peter, Grant Vincent and Jason Solomon), and three girls (Emma Louise, Nicolette Anne, and Elizabeth Rebecca) were born by caesarian section. They were born at Mowbray Maternity Hospital, in Cape Town South Africa. Their total birth weight was 24 lb 1 oz (10.9 kg), with individual birth weights ranging from 2 lb 6 oz (1.1 kg) to 4 lb 6 oz (2.0 kg) Only one of the six children, Grant, still lives in South Africa where he was born. The others have resettled in London, England and Dublin, Ireland.
References

Wallis, F. (2000). Nuusdagboek: feite en fratse oor 1000 jaar, Kaapstad: Human & Rousseau.)|Rosenkowitz sextuplets [online], Available at nationmaster.com [Accessed: 07 January 2010]