Unlike my MacBook, the Pi can stay on 24/7 without running up the electricity bill The Raspberry Pi makes an ideal candidate for a Time Machine backup target because it’s low-power and unobtrusive.

Discover the hidden OS Customization screen in Raspberry Pi Imager to save time configuring Wi-Fi, SSH, and more with every new microSD card flashing.

The Raspberry Pi Real Time Clock also comes complete with a 1 x CR1220 12mm Diameter – 3V Lithium Coin Cell Battery. Adafruit explain a little more.

The SHIM RTC expansion board provides the Raspberry Pi mini PC with a real-time clock that is supported by all three Raspberry Pi models A, B and B+ and it does’t use up valuable GPIO headers.

The Raspberry Pi is connected to a set of powered computer speakers. It plays a song whenever an appointment called “wake” comes up on his Google Calendar.

Check out this rather clever Binary Clock, which is based on a Raspberry Pi. Lets move away from "traditional sexagesimal time" and get some binary action going.