When OS X came out many years ago, it included a useful clock for the dock. Today this clock is no longer part of OS X. Softmatic Dock Clock for Mac fills this gap. It simply sits in the dock and displays the current time in analog or digital form.
Softmatic DockClock supports different styles and colors for analog and digital faces, a separate time zone setting for the clock and can chime in configurable periods.
All artwork is vectorized so it looks great on normal and Retina displays.
Preferences can be accessed through the dock icon's context menu and are stored between sessions.