2004ISO 8601:2004 Data elements and interchange formats - Information interchange - Representation of dates and times
2000ISO 8601:2000 Data elements and interchange formats - Information interchange - Representation of dates and times
1991ISO 8601:1988/Cor 1:1991 Data elements and interchange formats — Information interchange — Representation of dates and times — Technical Corrigendum 1
1988ISO 8601:1988 Data elements and interchange formats — Information interchange — Representation of dates and times