How to set the time & alarm for SI564: Press the MODE button located on the top of the clock. The screen blinks the hour w "AL HOUR?" specified. Press the SELECT button to go fwd or the PRESET button to go back in time. Press the MODE button again to set the "AL MINUTE?" Subsequent presses of the Mode button scrolls through AL BUZZER, AL VOLUME, HOUR, MINUTE, DUAL HOUR, 12/24 HR, YEAR, MONTH, DATE, temp F or C, AREA features. It seems that the clock saves the last setting you make. Hope this helps others!