The Day Clock is a clock specifically designed for individuals with dementia or Alzheimer’s disease that have difficulty distinguishing the day from the night. It displays the time of day as well as what part of the day it is, either morning, afternoon, evening, or night. The hours at which the "times" change are as follows: morning (7:00 am to noon), afternoon (noon to 5:00 pm), evening (5:00 pm to 10:00 pm), and night (10:00 pm to 7:00 am). The Day Clock will retain the correct time if it is unplugged and it will revert back to the correct date and time when switched back on. It also features tamper-proof buttons to ensure that random pressing of the buttons does not reset the clock, as well as corner night lighting to help make the display more prominent at night.