The following example shows the required Lexical representation of the Timestamp type used in this specification; all Timestamp typed values SHALL be formatted accordingly:

yyyy '-' mm '-' dd 'T' hh ':' mm ':' ss ('.' s+)('+' | '-') hh ':' mm


The UTC offset is always required (not optional) and the use of the character ‘Z’ (or ‘Zulu’ time) as an abbreviation for UTC offset +00:00 or -00:00 is NOT permitted.