Yes, earthquakes can affect the length of day, but it's on the order of a microsecond, whereas the unpredictable decade-scale changes are on the order of hundreds of microseconds.
https://www.snexplores.org/article/earthquake-shortens-day
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Re: modelling and predicting the earth's speed of rotation
Date: 2022-12-05 10:16 (UTC)Yes, earthquakes can affect the length of day, but it's on the order of a microsecond, whereas the unpredictable decade-scale changes are on the order of hundreds of microseconds.
https://www.snexplores.org/article/earthquake-shortens-day