Firstly the Luvele Pure & Pure Plus yogurt makers have a 24hr timer. Not everyone uses or needs the full 24 hours to make great yogurt. If you are on the SCD diet however you may notice that the timer changes after it hits the 10hr mark.To explain this further, the timer from 24hrs will count down in increments of 1hr.For example: 24 / 23 / 22 / 21 etc.Once it reaches 10hrs it will count down in decimal points.For example: 10/ 0.0 / 9.9 / 9.8 / 9.7 etc.When the timer clicks to 0.0 between 10 & 9.9, leave it running. This is just the timers program to begin the decimal point count down.The timer will beep when the process has finished :)If you have any other questions about your timer, feel free to message us at support@luvele.com