# New Ticket Created by Zefram # Please include the string: [perl #127007] # in the subject line of all future correspondence about this issue. # <URL: https://rt.perl.org/Ticket/Display.html?id=127007 >
DateTime.Str is documented to produce output in ISO 8601 format by default, but the formatting of some year numbers outside the range 0 to 9999 inclusive is faulty. The expanded representation that is required is governed by ISO 8601:2004 clause 4.1.2.4. Firstly, for year numbers >9999, the use of a leading sign is mandatory with year numbers of five or more digits, but the sign is being omitted: > DateTime.new(:year(10000)).Str 10000-01-01T00:00:00Z > DateTime.new(:year(54321)).Str 54321-01-01T00:00:00Z > DateTime.new(:year(654321)).Str 654321-01-01T00:00:00Z Secondly, for year numbers -999 to -1 inclusive, it is mandatory to use at least four digits, but only three are being used: > DateTime.new(:year(-999)).Str -999-01-01T00:00:00Z > DateTime.new(:year(-1)).Str -001-01-01T00:00:00Z The representation is correct for years <-999 and years 0 to 9999 inclusive. -zefram
