The calendar can be used to help you to see if it is night or day, and thereby make sure you don't call relatives or get up in the middle of the night by mistake.
The addition of a personal picture makes the calendar a nice piece of home decoration, which catches the eye in a natural way.
Without any confusing buttons, the Night and Day Calendar is connected to the power outlet with the provided AC adaptor. In the event of a power cut the display text disappears, but it works normally when the power returns.
The Night and Day Calendar is available in several languages.