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External Data Source

Source

Regular Expression
^(?:[2-9]\d\d\d)-(?:1[012]|0?[1-9])?-(?:31(?!.(?:0?[2469]|11))|(?:30|29)(?!.0?2)|29(?=.0?2.(?:(?:(?:1[6-9]|[2-9]\d)?(?:0[48]|[2468][048]|[13579][26])|(?:(?:16|[2468][048]|[3579][26])00)))(?:T))|(?:2[0-8]|1\d|0?[1-9]))T(2[01234]|[01]\d):[0-5]\d:[0-5]\d[+-][01]\d:[0-5]\d$