You can use ScriptRunner to "become" another user. If you want to do it in bulk or automatically you can use the API. Not sure what your preference is... if the users are already in your LDAP directory you probably already have location info, from which you can get timezone info.
Atlassian Summit is an excellent opportunity for in-person support, training, and networking.Learn more
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG