Why are some clocks marked with an asterisk (*) in menus?
If you show daylight-saving time transitions in the Clocks palette pop-up menu, in the Dock icon menu or the menu associated with the World Clock Deluxe icon or clock in the menu bar, clocks that are about to switch to daylight-saving or standard time will be marked with an asterisk (*). Marked clocks will switch to daylight-saving or standard time within a week. To view when the transition will exactly occur, simply display the DST Transitions submenu.