earthquake
- 2021.04.11: Earthquake Information of 13 km W of Aguililla, Mexico
- 2021.04.13: Earthquake Information of 143 km W of Ternate, Indonesia
- 2021.04.15: Earthquake Information of 225 km SSE of Praya, Indonesia
- 2021.04.17: Earthquake Information of 85 km W of Ovalle, Chile
- 2021.04.08: Earthquake Information of 270 km NNW of Gorontalo, Indonesia
- 2021.04.09: Earthquake Information of 89 km NE of Tobelo, Indonesia
- 2021.04.10: Earthquake Information of 168 km SSW of Sarangani, Philippines
- 2021.04.12: Earthquake Information of Halmahera, Indonesia
- 2021.04.14: Earthquake Information of 106 km SSW of Ishigaki, Japan
- 2021.04.16: Earthquake Information of 243 km NNW of Tobelo, Indonesia
