She plans to make her centenary even more exciting by doing a shark cage dive tomorrow.
Her birthday skydive was a tandem jump in which she was in harness with another person. The jump took place yesterday near the Melkbosstrand area north of Cape Town.
Wearing a red jumpsuit, Harwood was joined in the air by 15 family members and friends who participated in groups of three. Harwood said it was wonderful seeing all the others around her.
Harwood said this was her third skydive. She did her first when she was 92 years old in 2007.