Galactic Standard Time

Galactic Standard Time, also known as Mekeleto or m/k/e Notation, is a collection of units of time that express duration. These units are universal, unaffected by the length of the solar or sidereal days and years of different planets; as such, it is rarely used colloquially as a planet's citizens will often use their world's rotation to define the passage of time. Galactic Standard Time is most commonly used by spacefarers in the absence of natural days, as well as the creation of standardized scientific, historical, and political documentation.

Standard Time
Standard Time consists of the dia (day), dithan (month), and dithra (year). Smaller units make up the dia: sondithe (second), akvedithe (minute), and havdithe (hour). Sondithe and akvedithe are functionally identical to the second and minute of Earth, as well as the smallest units of everyday measurement on most terrestrial planets. Havdithe consists of 120 akvedithee, equivalent to 2 Earth hours. Dia consists of 20 havdithee, equivalent to 40 Earth hours. Dithan consists of 20 diae, equivalent to 34 Earth days. Dithra consists of 12 dithane, equivalent to 408 Earth days.

m/k/e Notation
Galactic Standard Time's m/k/e Notation is comprised of three units: Meya, Kelo, and Eton. Meya is the largest unit, and the only unit with no defined duration. Defining the era in which the subsequent Kelo and Eton take place, the Meya was created to prevent excessively high Kelo numbers as time passes. Kelo consists of 450 Eton. Kelo is generally the most precise unit used in carbon dating and historical estimation. Eton is the smallest unit and is equal to 2 dithra.