Comment Comment by zosima Different countries switched to the Gregorian calendar at different times. Pope Gregory XIII papal bull went into effect October 1582, see: https://en.wikipedia.org/wiki/Gregorian_calendarAnd so 15 October 1582 used to be the 0 for some COBOL date functions.Later that was changed to Jan 1 1600. In IBM's systems you can control what you prefer by a switch: https://www.ibm.com/docs/en/zos/2.4.0?topic=services-date-li... parent zosima 1 year ago
And so 15 October 1582 used to be the 0 for some COBOL date functions.
Later that was changed to Jan 1 1600. In IBM's systems you can control what you prefer by a switch: https://www.ibm.com/docs/en/zos/2.4.0?topic=services-date-li...