2026-09-16T15:07:44.327696Z37.48033905138.685623210manualconfirmedEOST5.476672641mb1Origin/20260916152053.505875.82216Magnitude/20260916152053.505931.82217EOSTEvent of magnitude 5.5, near Niigata (Monde)region nameNamazucatalogEOSTtelecontributorID