Returns the ICU Calendar object.
Returns the ICU Calendar object.
We represent 'No time zone' by TimeZone.UNKNOWN_ZONE
Returns the TimeZone in the format of "+00:00"
From Section 3.2.7.4 of http://www.w3.org/TR/xmlschema-2/#dateTime
From Section 3.2.7.4 of http://www.w3.org/TR/xmlschema-2/#dateTime
Thus 2000-03-04T23:00:00+03:00 normalizes to 2000-03-04T20:00:00Z
B. If P and Q either both have a time zone or both do not have a time zone, compare P and Q field by field from the year field down to the second field, and return a result as soon as it can be determined. That is:
C. Otherwise, if P contains a time zone and Q does not, compare as follows:
D. Otherwise, if P does not contain a time zone and Q does, compare as follows: