Hi Anne! According to page 10 of the user manual (https://bit.ly/2Zkrkx3) these are the steps to set the time:
1. Press the Power Level button for 3 seconds.
2. Use the number buttons to enter the current time. You need to press at least three numbers to set the clock. For example, if the current time is 5:00, press 5, 0, 0. The display will show: 500.
3. Press the Power Level button.
4. Use the Power Level button to select AM / PM.
5. Press the OK/START button.
6. A colon appears indicating that the time is set.
^Jecca