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External Data Source

Source

Regular Expression
^((0[1-9]|[12][0-9]|3[01])([/])(0[13578]|[1][02])([/])(19[0-9][0-9]|20[0-9][0-9]))|((0[1-9]|[12][0-9]|30)([/])(0[469]|11)([/])(19[0-9][0-9]|20[0-9][0-9]))|((0[1-9]|[1][0-9]|[2][0-8])([/])(02)([/])(19[0-9][0-9]|20[0-9][0-9]))|((29)([/])(02)([/])(190[48]|19[13579][26]|19[2468][048]|20[02468][048]|20[13579][26]))$