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External Data Source

Source

Regular Expression
^((((((((jan(uary)?)|(mar(ch)?)|(may)|(july?)|(aug(ust)?)|(oct(ober)?)|(dec(ember)?)) ((3[01])|29))|(((apr(il)?)|(june?)|(sep(tember)?)|(nov(ember)?)) ((30)|(29)))|(((jan(uary)?)|(feb(ruary)?|(mar(ch)?)|(apr(il)?)|(may)|(june?)|(july?)|(aug(ust)?)|(sep(tember)?)|(oct(ober)?)|(nov(ember)?)|(dec(ember)?))) (2[0-8]|(1\d)|(0?[1-9])))),? )|(((((1[02])|(0?[13578]))[\.\-/]((3[01])|29))|(((11)|(0?[469]))[\.\-/]((30)|(29)))|(((1[0-2])|(0?[1-9]))[\.\-/](2[0-8]|(1\d)|(0?[1-9]))))[\.\-/])|(((((3[01])|29)[ \-\./]((jan(uary)?)|(mar(ch)?)|(may)|(july?)|(aug(ust)?)|(oct(ober)?)|(dec(ember)?)))|(((30)|(29))[ \.\-/]((apr(il)?)|(june?)|(sep(tember)?)|(nov(ember)?)))|((2[0-8]|(1\d)|(0?[1-9]))[ \.\-/]((jan(uary)?)|(feb(ruary)?|(mar(ch)?)|(apr(il)?)|(may)|(june?)|(july?)|(aug(ust)?)|(sep(tember)?)|(oct(ober)?)|(nov(ember)?)|(dec(ember)?)))))[ \-\./])|((((3[01])|29)((jan)|(mar)|(may)|(jul)|(aug)|(oct)|(dec)))|(((30)|(29))((apr)|(jun)|(sep)|(nov)))|((2[0-8]|(1\d)|(0[1-9]))((jan)|(feb)|(mar)|(apr)|(may)|(jun)|(jul)|(aug)|(sep)|(oct)|(nov)|(dec)))))(((175[3-9])|(17[6-9]\d)|(1[89]\d{2})|[2-9]\d{3})|\d{2}))|((((175[3-9])|(17[6-9]\d)|(1[89]\d{2})|[2-9]\d{3})|\d{2})((((1[02])|(0[13578]))((3[01])|29))|(((11)|(0[469]))((30)|(29)))|(((1[0-2])|(0[1-9]))(2[0-8]|(1\d)|(0[1-9])))))|(((29feb)|(29[ \.\-/]feb(ruary)?[ \.\-/])|(feb(ruary)? 29,? ?)|(0?2[\.\-/]29[\.\-/]))((((([2468][048])|([3579][26]))00)|(17((56)|([68][048])|([79][26])))|(((1[89])|([2-9]\d))(([2468][048])|([13579][26])|(0[48]))))|(([02468][048])|([13579][26]))))|(((((([2468][048])|([3579][26]))00)|(17((56)|([68][048])|([79][26])))|(((1[89])|([2-9]\d))(([2468][048])|([13579][26])|(0[48]))))|(([02468][048])|([13579][26])))(0229)))$