The exact amount is not yet known, but theoretical models suggest the earthquake shortened the length of a day by 2.68 microseconds, due to a decrease in the oblateness of the Earth.
Jumlah pastinya belum diketahui, namun model teoretis menunjukkan bahwa gempa ini memeperpendek durasi satu hari selama 2,68 mikrodetik dikarenakan berkurangnya kepepatan Bumi.