The first mechanical clocks were invented in Europe during the 14th century, and they were not very accurate. They were initially used in churches to regulate the ringing of bells and for religious ceremonies.
At this time, telling time was still largely a matter of observation of the sun, stars, and other natural phenomena. Sundials, water clocks, and hourglasses were also commonly used for timekeeping.
As mechanical clocks became more common and improved in accuracy, they were used by people such as scientists, astronomers, and wealthy individuals. However, it was still not until the 17th century that clocks became common household items.
Therefore, during the early days of clockmaking, only a few people who had access to these devices would be able to tell the time accurately. For most people, timekeeping remained a relatively imprecise and variable affair that relied on the observation of natural cycles and other methods of estimation.