earthquake
- 2021.04.14: Earthquake Information of 106 km SSW of Ishigaki, Japan
- 2021.04.16: Earthquake Information of 243 km NNW of Tobelo, Indonesia
- 2021.04.18: Earthquake Information of Kepulauan Babar, Indonesia
- 2021.04.19: Earthquake Information of 42 km SSE of Ishinomaki, Japan
- 2021.04.20: Earthquake Information of 9 km ENE of Komoro, Japan
- 2021.04.21: Earthquake Information of 149 km NW of Tocopilla, Chile
- 2021.04.22: Earthquake Information of 9 km SW of Silago, Philippines
- 2021.04.23: Earthquake Information of 4 km SSE of Borbon, Philippines
- 2021.04.24: Earthquake Information of 169 km NNW of Amahai, Indonesia
- 2021.04.25: Earthquake Information of 205 km WSW of Haveluloto, Tonga
