Which of the 3 update modes in the exchange calendar update tool will go out and update the appointments on all mailboxes with the time zone changes?

Q: Which of the 3 update modes in the exchange calendar update tool will go out and update the appointments on all mailboxes with the time zone changes?
A: I think you want to use the Quiet Mode if you are looking to "re-base" calendar items. If that is not within the options you are looking at, let me know. Have you resourced Knowledge Base Article 931667?