JSON Schema date-time format no validated correctly

[dezfowler]

The JSON Schema spec says the string date-time format should match https://tools.ietf.org/html/rfc3339.

This RFC is actually pretty restrictive - the ABNF in the RFC is...

   date-fullyear   = 4DIGIT
   date-month      = 2DIGIT  ; 01-12
   date-mday       = 2DIGIT  ; 01-28, 01-29, 01-30, 01-31 based on
                             ; month/year
   time-hour       = 2DIGIT  ; 00-23
   time-minute     = 2DIGIT  ; 00-59
   time-second     = 2DIGIT  ; 00-58, 00-59, 00-60 based on leap second
                             ; rules
   time-secfrac    = "." 1*DIGIT
   time-numoffset  = ("+" / "-") time-hour ":" time-minute
   time-offset     = "Z" / time-numoffset

   partial-time    = time-hour ":" time-minute ":" time-second
                     [time-secfrac]
   full-date       = date-fullyear "-" date-month "-" date-mday
   full-time       = partial-time time-offset

   date-time       = full-date "T" full-time

For a string to match it MUST include a timezone offset i.e. "Z" or "+01:00" however currently a value with no offset information will match e.g. "1977-02-01T00:00:00.000".

This is because the "K" in the custom date time format string used "yyyy-MM-dd\THH:mm:ss.FFFFFFFK" allows the offset to be omitted.