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Clock dial to twenty - four hourly divisions in which, at twelve o'clock, the numbers a and 12 are replaced by the numbers thirteen to twenty-four, and in which, at midnight, the numbers thirteen to twenty - four are replaced by the numbers a and 12, this replacement is performed automatically
Clock dial to twenty - four hourly divisions in which, at twelve o'clock, the numbers a and 12 are replaced by the numbers thirteen to twenty-four, and in which, at midnight, the numbers thirteen to twenty - four are replaced by the numbers a and 12, this replacement is performed automatically
