This format meant the race took place for 12 hours each between 8am to 8pm and between it, the cars were locked up overnight to prevent maintenance work from being performed on them.
Este formato significou que a carreira disputárase en dúas quendas de 12 horas cada unha entre 8am a 8pm e no intervalo os coches foron pechados nun Parc fermé durante a noite para evitar realizar traballos de mantemento neles.