Hi guys. I have a simple question. When we are serializing DateAndTime with fuel, we serialize its 4 instance variables: 'seconds offset jdn nanos'. And then, during materialization, we recreate them. I know that all instances of DateAndTime have their instVar 'offset' pointing to the local timezone offset, that is, DateAndTime localTimeZone offset. In fuel, during materialization, we recreate those offsets. So all materialized instances of DateAndTime will have their own (different) instance of Duration in the slot 'offset'. On the one hand, I think this is necessary becase you can materialize in a different image with different time zone, so having the timezone is mandatory. What I don't know, and this is the question, is if the timezone is the same between serialization and materialization image, MUST all materializated DateAndTime point to the same offset? or it is just an optimization that they all point to the same? Thanks in advance, -- Mariano http://marianopeck.wordpress.com