However, because of tidal effects of the Moon, the length of a day increases at an average of 15 microseconds per year, so any rotational change due to the earthquake will be lost quickly.
Tetapi karena efek pasang Bulan, durasi satu hari bertambah rata-rata 15 µs per tahun, jadi perubahan rotasi apapun akibat gempa akan hilang dengan cepat.