All JMCF date-/time fields (Calculated Date/time Field, Transition Date/time Field, Last Field Change Date/Time field) should support setting a format for both view issue and issue list views:
@@Format: configure the view issue format
@@ColFormat: configure the issue list (columnar) format
Note that for Transition Date/Time field, the markers are @Format: and @ColFormat: instead (single "@").
The value is one of the constants from https://developer.atlassian.com/static/javadoc/jira/reference/com/atlassian/jira/datetime/DateTimeStyle.html