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External Data Source

Source

Regular Expression
^(?!0?2/3)(?!0?2/29/.{3}[13579])(?!0?2/29/.{2}[02468][26])(?!0?2/29/.{2}[13579][048])(?!(0?[469]|11)/31)(?!0?2/29/[13579][01345789]0{2})(?!0?2/29/[02468][1235679]0{2})(0?[1-9]|1[012])/(0?[1-9]|[12][0-9]|3[01])/([0-9]{4})$