How do I set my Sharp SPC 378 Clock to DST?

To set your Sharp SPC 378 clock to Daylight Saving Time (DST), locate the "MODE" button on the back or side of the clock. Press it until you see the DST option, then use the "+" or "-" buttons to toggle DST on or off. Once you've made your selection, press the "MODE" button again to confirm and exit the setting mode. Make sure to check the time afterward to ensure it reflects the correct DST adjustment.