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External Data Source

Source

Regular Expression
((([0][1-9]|[12][\d])|[3][01])[-/]([0][13578]|[1][02])[-/][1-9]\d\d\d)|((([0][1-9]|[12][\d])|[3][0])[-/]([0][13456789]|[1][012])[-/][1-9]\d\d\d)|(([0][1-9]|[12][\d])[-/][0][2][-/][1-9]\d([02468][048]|[13579][26]))|(([0][1-9]|[12][0-8])[-/][0][2][-/][1-9]\d\d\d)