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External Data Source

Source

Regular Expression
^(\d{4})(?:-([0]\d|[1][0-2]))(?:-([0-2]\d|[3][01]))(?:T([01]\d|2[0-3]))(?::([0-5]\d))(?::([0-5]\d)(?:\.(\d{1,7}?)|)|)(Z|([+-])([01]\d|2[0-3])(?::([0-5]\d)))$