Hold down the ALARM1 or ALARM 2 buttons. At the same time hit the UP arrow on the top button on the far right.. The LED'S will light up showing, mon-fri, all 7 days or just SAT/SUN. Where you leave it is where it will alarm. To change the alarm time, hold down alarm1 or alarm2 and then at same time, hold the up/down button on the top right to set the desired time. be sure to check for the a.m. indicator as well so your not getting up at p.m.