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Bridging TAI and UT1: How UTC Uses Leap Seconds to Keep Atomic Clocks Synced with Earth's Rotation

Global timekeepers have resolved to abolish the leap second starting in 2027, allowing atomic clocks to run continuously without adjustments for Earth's rotation. The decision aims to protect critical digital infrastructure from the severe technical disruptions caused by unpredictable time corrections.

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Illustration: The General Conference on Weights and Measures has voted to end the practice of adding leap seconds to Coordinated Universal Time.From: Metrology Officials Vote to End Leap Second Adjustments to Standard Time

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Since 1972, timekeepers have added 27 leap seconds to keep atomic clocks aligned with the Earth's rotation.From: Metrology Officials Vote to End Leap Second Adjustments to Standard Time ·
Recent accelerations in Earth's rotation raised the unprecedented and risky prospect of a negative leap second.From: Metrology Officials Vote to End Leap Second Adjustments to Standard Time ·
How UTC uses 1-second steps to remain within 0.9 seconds of Earth's actual rotation.From: Bridging TAI and UT1: How UTC Uses Leap Seconds to Keep Atomic Clocks Synced with Earth's Rotation ·
Since 1972, 27 leap seconds have been added to Coordinated Universal Time.From: Bridging TAI and UT1: How UTC Uses Leap Seconds to Keep Atomic Clocks Synced with Earth's Rotation ·
Illustration: Modern telecommunications and financial networks rely on continuous timekeeping, making manual leap second adjustments a severe operational hazard.From: Metrology Officials Vote to End Leap Second Adjustments to Standard Time ·

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