In the maker community, "Nixie Night" or "Build Night" refers to collaborative workshops where enthusiasts gather to assemble vintage-style clocks.

A Nixie tube is a cold-cathode gas-discharge display used for showing numerals or other information.

: When a high voltage (typically 170V–180V DC ) is applied, the gas surrounding the selected cathode ionizes and glows with a distinct orange-red light.

: The glass tube is filled with a low-pressure gas, usually neon. It contains a wire-mesh anode and multiple stacked cathodes shaped like numbers.

January 2014 Build Night: EL Wire Nixie Tube - Instructables

: Participants learn to handle the unique requirements of Nixie tubes, such as high-voltage power supplies (boost converters) and microcontrollers like Arduino to drive the logic.

Outside of electronics, "Nixie" appears in various niche areas:

: Popular in the 1950s through the 1970s for laboratory equipment and calculators, they were eventually replaced by LEDs and LCDs. 2. The "Nixie Night" Concept