There's no way to parse a single digit hour in the offset. Example:

  2011-01-20 02:55:07.532941 -8:00

The spec needs to be modified to cover this case and the code enhanced to support it.

The only workaround is to parse the date/time separately, use a hand coded parser for the offset and combine the LocalDateTime with the hand parsed offset. Not an easy work around.

I have run across some occurrences of this though I can't say how common it is.