2026-04-21T05:19:56.456Z39.862143.671210manualconfirmedUSGS4.7mww1Origin/20260421054036.920499.203359Magnitude/20260421054036.920615.2033602026-04-21T05:32:32.242525Z2026-04-21T05:40:36.932117ZOff East Coast of Honshu, Japanregion nameOrigin/20260421054036.920499.203359