A leap second is an adjustment added to Coordinated Universal Time (UTC) to synchronize atomic time with astronomical time, compensating for Earth's irregular rotation. This practice ensures that our timekeeping remains aligned with the position of the Earth relative to the Sun, maintaining the accuracy necessary for various global systems.

Leap Second

leap second

Coordinated Universal Time (UTC) is the primary time standard by which the world regulates clocks and time, serving as the basis for civil time across the globe. It is maintained using highly precise atomic clocks and is periodically adjusted with leap seconds to account for Earth's irregular rotation.

Coordinated Universal Time

Atomic time is a precise way of keeping time based on the vibrations of atoms, particularly cesium atoms, which provide an accuracy unmatched by other timing methods. This system serves as the foundation for the International Atomic Time (TAI) and is crucial for technologies that require exceptional timekeeping, including GPS and telecommunications networks.

atomic time

Astronomical time is a concept used to describe the measurement of time based on the Earth's rotation and its orbital path around the Sun, providing a means to maintain precise synchronization with celestial events. It is crucial for various scientific purposes such as navigation, astronomy, and understanding the Earth's natural cycles and seasonal changes.

astronomical time

Earth's irregular rotation

Timekeeping is the practice of measuring, recording, and managing time, crucial for coordinating activities and ensuring synchronization across various domains. It has evolved from ancient methods like sundials to modern atomic clocks, reflecting technological advancements and the increasing precision required in scientific and daily applications.

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