To set the time on a Sony alarm clock: 1. Press the Time and Hour buttons simultaneously to set the hour. Press the Hour button until the correct hour is displayed with AM or PM indicated. 2. Press the Time and Minutes buttons together to set the minutes. Continue pressing the Minutes button until the right time is displayed. 3. To set the alarm time, repeat the steps for setting the time but press the Alarm button instead of Hour or Minutes. Move the alarm switch to the ON position to activate the alarm.