UTC or the Coordinated Universal Time refers to the primary time which the world regulates all clocks around. Precise Atomic Clocks combined with planet Earth’s rotation makes use of the UTC as a time-telling standard.
The coordination of time and frequency transmissions across the globe began on the first of January 1960. The UTC was officially adopted as CCIR Recommendation 374 as, Standard-Frequency and Time-Signal Emissions, three years after. However, the official abbreviation of the UTC and the official name in the English language, Coordinated Universal Time, was only adopted in popular lingo in 1967.