A calendar apparatus includes a housing having opposed side rails for holding a calendar therebetween. The calendar apparatus includes a processor and a memory device in data communication with the processor. The apparatus includes a user input device, a microphone, and an audio output positioned in the housing and in data communication with the processor. The processor includes programming for inputting event data using the input device, inputting message data using the microphone, actuating the audio output device to provide alarm or to display message data after occurrence of an event. The calendar apparatus may include a picture holder, a clock, and a calculator.