A list of current public holidays in South Africa (2018) and related Freedom Swim Series open water swims. Also included are Brian Curtis Mile, Ice Swim SA and the Sanlam Cape Mile:
The Public Holidays Act (Act No 36 of 1994) states that whenever a public holiday falls on a Sunday, the Monday following it will be a public holiday.
References and links:
Big Bay Events calendar for 2018
Sanlam Cape Mile