Throughout history, the evolution of timekeeping has responded to our technological advances, societal needs and the way we reorganized our daily lives.

In ancient times, the measurement of time attuned to the movement of the sun, moon and the stars was often imprecise and varied depending on the different regions and seasons. During the summer, the daylight hours were longer, while the winter days were shorter.

As societies grew larger and more complex, there was a growing need to standardize the measurement of time to facilitate activities such as commerce, transportation and communication.

This advancement led to the invention of various timekeeping devices, such as the water clock and sundial, which were frequently lacking precision.

Water clocks had limitations because they were affected by changes in water flow, temperature, and fluidity, while sundials, though reliable on clear sunny days, could not be used indoors, during the hours of darkness, or on cloudy days.

The invention of the mechanical clock during the Middle Ages brought about a fundamental change in timekeeping. It offered greater precision, standardization and significantly improved reliability.

Our planet completes a full rotation on its axis in relation to the fixed stars every 23 hours, 56 minutes, and 4 seconds, known as the sidereal (stars) day.

However, the more commonly used measure is the solar day. During a solar day, our planet completes one full rotation around its axis and moves almost another degree as it orbits the sun (which is, in fact, a star), returning to the same position relative to the sun.

This rotation takes a little longer to complete, averaging approximately 24 hours.

The widespread consensus to divide the day into 12 hours of day and 12 hours of night, played a significant role in shaping our contemporary timekeeping system.

Over the past centuries, technological progress has led to significant improvements in the accuracy, reliability and accessibility of the mechanical clocks.

From spring driven and pendulum clocks, the advancement to pocket and wristwatches with miniaturised mechanisms, made timekeeping more personalised, accurate and convenient.

We are currently living at the dawn of the interplanetary space travel era. Although the most advanced spacecrafts have not yet travelled beyond our solar system. Based on the course of history, as our understanding of space exploration advances, the likelihood of discovering new technologies that will lead to interplanetary travel as part of our daily routine is quite probable.

Consequently, at some point the transition from a geocentric to a universal perspective will become inevitable.

There are countless galaxies in the universe, each containing an immense number of solar systems with planets similar to our own. Given the diversity observed within our solar system, it is reasonable to assume that other planets rotate around their own axes at different speeds.

When interplanetary travel will begin, the existing 24 hour division of time, comprising of 60 minutes in an hour and 60 seconds in a minute, will become too complex.

To accommodate the new day and night cycles of other planets, a standardized measurement of time based on the division of the day into 100 units, as in percentages, would simplify time calculations for travellers.

The subdivision of one day into 100 centijours (hours), every hour into 100 millijours (minutes), every minute into 100 microjours (seconds) and every second into 100 nanojours (parts of a second), would help organize time efficiently and enable the planning of daily activities with maximum precision.

The transition to a 100 unit clock division would require a significant cultural shift. Widespread updates and changes to the existing timekeeping methods, in computerized systems, software and devices based on the measurement of time.

However, once this new time system becomes globally standardized, it will simplify communication and cooperation between the different groups living on different planets and time zones.