The Clocks palette lets you quickly change a clock's format, apply weekday, date, and time formats, and assign or remove labels.
To show or hide seconds, weekday, date, date change, local time offset, UTC offset, and city, time zone or alternate text, Shift-click the clock and check or uncheck items in the Show submenu of the pop-up menu.
To apply a weekday format, Shift-click the clock and choose a format from the Weekday Format submenu of the pop-up menu.
To apply a date format, Shift-click the clock and choose a format from the Date Format submenu of the pop-up menu.
To apply a time format, Shift-click the clock and choose a format from the Time Format submenu of the pop-up menu.
To assign or remove a label, Shift-click the clock and choose a label or None from the Label submenu of the pop-up menu.