2025-12-26T23:57:28.0000Z40.8733328.343335.98manualconfirmedKOERI1.4ML1Origin/20251227004559.956483.61275Magnitude/20251227004559.956536.61276KOERIMarmara Denizi - [19.80 km] Büyükçekmece (İstanbul)region name