Number

j

Date ${\text{t}}_{\text{e}}\text{(2021},\text{j)}$ of the strongest earthquake

Magnitude ${\text{M}}_{\text{up}}\text{(2021},\text{j},\text{loc}.\text{max}\text{.)}$ of the strongest earthquake

Region of the strongest earthquake

$\Delta (\text{j})=\left|{\text{t}}_{\text{e}}\text{(2021},\text{j)}-{\text{t}}^{\ast }{\text{(τ}}_{\text{c,r}},\text{2021)}\right|$ ,

in days

1

2021-02-13 = February 13, 2021 AD

7.1

73 km ENE of Namie, Japan

5 days after the date

${\text{t}}^{\ast }{\text{(τ}}_{\text{c,r}},\text{2021)}=\text{2021}\text{.1}\text{AD}$

2

2021-03-03 = March 3, 2021 AD

6.3

9 km W of Týrnavos, Greece

24 days after the date

${\text{t}}^{\ast }{\text{(τ}}_{\text{c,r}},\text{2021)}=\text{2021}\text{.1}\text{AD}$

3

2021-03-19 = March 19, 2021 AD

5.7

95 km ENE of Nagqu, China

40 days after the date

${\text{t}}^{\ast }{\text{(τ}}_{\text{c,r}},\text{2021)}=\text{2021}\text{.1}\text{AD}$