World May Ditch 'Leap Second' in Favor of 'Leap Hour'
International time authorities are preparing to phase out the leap second to align atomic clocks with Earth's rotation. The shift comes as the planet spins faster, creating a discrepancy between precise atomic time and the solar day. Some proposals suggest replacing the single-second adjustment with a leap hour to manage these timing differences. This change aims to prevent technical disruptions in global systems that rely on perfectly synchronized timekeeping.
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- ✓ Time authorities are preparing to end the use of leap seconds.
- ✓ The Earth is spinning faster.
What changed
Reports now indicate a potential shift toward using a leap hour instead of a leap second.
Live updates
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Global Timekeepers Move to Eliminate Leap Seconds
International time authorities are preparing to phase out the leap second to align atomic clocks with Earth's rotation. The shift comes as the planet spins faster, creating a discrepancy between precise atomic time and the solar day. Some proposals suggest replacing the single-second adjustment with a leap hour to manage these timing differences. This change aims to prevent technical disruptions in global systems that rely on perfectly synchronized timekeeping.
Why it matters
Leap seconds were originally designed to keep Coordinated Universal Time in sync with Earth's slowing rotation. However, recent increases in planetary rotation speed have made these adjustments problematic for digital infrastructure.
What is confirmed
- Time authorities are preparing to end the use of leap seconds.
- The Earth is spinning faster.
Still unconfirmed
- The world may replace the leap second with a leap hour.
What to watch next
- Official announcement from international timekeeping bodies on the specific replacement mechanism.
- Technical specifications for how a leap hour would be implemented across global networks.
confidence 80%Sources used for this update (4)
- Newser — World May Ditch 'Leap Second' in Favor of 'Leap Hour'
- The Telegraph — Earth is spinning faster... and your clock could be left behind
- The Register — Time lords prepare to kick leap seconds into the next millennium
- Financial Times — Time is running out for the leap second
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