earthquake
- 2021.09.21: Earthquake Information of 73 km W of Talcahuano, Chile
- 2021.09.22: Earthquake Information of 143 km NW of Ternate, Indonesia
- 2021.09.23: Earthquake Information of 104 km NNE of Calama, Chile
- 2021.09.24: Earthquake Information of 152 km NW of Tobelo, Indonesia
- 2021.09.25: Earthquake Information of 203 km N of Shi Yomi, India
- 2021.09.26: Earthquake Information of 20 km W of Talisay, Philippines
- 2021.09.27: Earthquake Information of 7 km NNW of Thrapsanón, Greece
- 2021.09.28: Earthquake Information of 109 km WSW of Ternate, Indonesia
- 2021.09.28: Earthquake Information of 109 km WSW of Ternate, Indonesia
- 2021.09.29: Earthquake Information of 241 km NNW of Nanao, Japan
