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Why tomorrow is predicted to be a tiny bit shorter than a typical day

By Nell Greenfieldboyce
Published July 21, 2025 at 1:16 PM MST

The days have been shorter than normal, at least if you count your time in milliseconds.

Copyright 2025 NPR
Nell Greenfieldboyce
Nell Greenfieldboyce is a NPR science correspondent.
See stories by Nell Greenfieldboyce