Science ❯ Earth Science ❯ Geophysics

Earth's Rotation

Factors Affecting Rotation Time Measurement Effects of Acceleration Core Dynamics Influences on Rotation Acceleration Timekeeping

Earth Spins Faster Than Ever, Logging One of the Shortest Days on Record

International timekeepers plan a negative leap second by 2029 to align clocks after the planet’s unexpected spin-up.

Earth Sets Second-Shortest Day of 2025 as Spin Continues to Accelerate

New Projections Confirm Record-Short Days This July and August

Earth Could Set Shortest Day Record in July or August 2025