Clocks regulate modern existence. Our days are packed with activities and obligations that require us to be in a particular place at a certain time. As a result, chronometry, or the science of timekeeping, has become a centuries-old race to develop better and more accurate ways of answering the question, “What time is it?”
A day refers to the amount of time it takes for a planet to complete a single 360-degree rotation on its axis. On Earth, that’s 24 hours. But the other planets in the solar system rotate at faster or slower speeds, and their day lengths vary accordingly.
The Mayan calendar is an interconnected calendar system developed circa 2000 BC. Although used by several Central American cultures until the 15th century, it was closely associated with the Mayan civilization of pre-Columbian Mesoamerica, and is still observed by some modern Mayan communities today.
Did you know? Leap seconds are adjustments made to Coordinated Universal Time (UTC) so that the UTC time standard, which is measured by atomic clocks and used for international timekeeping, can be synchronized with astronomical time to within 0.9 seconds. The…