The one-off day-night Test between South Africa and Zimbabwe, starting on Tuesday (tomorrow), will be staged under experimental playing conditions.
The International Cricket Council (ICC) gave permission to Cricket South Africa to stage a four-day Test. There are several variations from standard Test playing conditions.
Play will be scheduled for six-and-a-half hours each day, half an hour more than in five-day games, with 98 overs due to be bowled in a day, instead of 90. As in five-day games, an extra half hour can be added in order to complete the overs.
The first two sessions of play will be two hours 15 minutes each, instead of two hours, with a 20-minute tea break instead of a lunch break after the first session. There will be a 40-minute dinner break after the second session.