Date and Time Labels in Clocks 

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X opts = {GaugeFrameStyle -> GrayLevel[0.2]};

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X Grid[{{ClockGauge[DateString[], GaugeLabels -> {"Hour24", ":", "Minute"}, opts], ClockGauge[DateString[], GaugeLabels -> {"Hour12Short", ":", "Minute", " ", "AMPM"}, opts], ClockGauge[DateString[], GaugeLabels -> {"Hour24", ":", "Minute", ":", "Second"}, opts]}, {ClockGauge[DateString[], GaugeLabels -> {Placed["Time", Top], Placed["DateShort", Bottom]}, opts], ClockGauge[DateString[], GaugeLabels -> {Placed["Time", Top], Placed["CST", Bottom]}, opts], ClockGauge[DateString[], GaugeLabels -> {Placed["Time", Top], Placed[{"MonthNameShort", " ", "DayShort"}, Bottom]}, opts]}}]

Clocks generate labels using named date and time components.

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