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External Data Source

Source

Regular Expression
^((((19[0-9][0-9])|(2[0-9][0-9][0-9]))([-])(0[13578]|10|12)([-])(0[1-9]|[12][0-9]|3[01]))|(((19[0-9][0-9])|(2[0-9][0-9][0-9]))([-])(0[469]|11)([-])([0][1-9]|[12][0-9]|30))|(((19[0-9][0-9])|(2[0-9][0-9][0-9]))([-])(02)([-])(0[1-9]|1[0-9]|2[0-8]))|(([02468][048]00)([-])(02)([-])(29))|(([13579][26]00)([-])(02)([-])(29))|(([0-9][0-9][0][48])([-])(02)([-])(29))|(([0-9][0-9][2468][048])([-])(02)([-])(29))|(([0-9][0-9][13579][26])([-])(02)([-])(29)))$