No magnitude 6.5 or greater earthquakes have been recorded globally through September 23 in the September 21–27 window, following a September 20 M6.4 event in Papua New Guinea that fell just outside the period. USGS and EMSC catalogs show only moderate background seismicity, with the largest events limited to M5.0–5.5 quakes in Indonesia, Japan, the Philippines, and Chile—none approaching the resolution threshold on the moment magnitude scale. No foreshock swarms, significant aftershock sequences, or alerts from monitoring agencies indicate elevated risk in active zones such as the Pacific Ring of Fire. This recent quiet period underpins the market’s 54.5% implied probability for zero events, though the remaining four days carry normal uncertainty given the irregular clustering of larger quakes.