Year i AD

Date ${\text{t}}_{\text{e}}\text{(i},\text{loc}\text{.min}\text{.)}$ of the strongest earthquake

Magnitude ${\text{M}}_{\text{up}}\text{(i},\text{loc}\text{.min}\text{.)}$ of the strongest earthquake

Region of the strongest earthquake

The realized necessary condition

2.1 or 2.2

${\Delta }_{\ast }(\text{i})=\left|{\text{t}}_{\text{e}}\text{(i},\text{loc}\text{.min}\text{.)}-{\text{t}}_{\ast }{\text{(τ}}_{\text{c,r}},\text{i)}\right|$ ,

in days

1910 AD

April 12, 1910 AD

= 1910.27926078 AD

8.1

northeast of Taiwan region

2.2 partly

22.86 days after the calculated date ${\text{t}}_{\ast }{\text{(τ}}_{\text{c,r}},1\text{910)}=1910.\text{21666666}\text{AD}$

1918 AD

February 13, 1918 AD

= 1918.12046543 AD

7.3

near the coast of

Fujian, China

2.2 perfectly

68.35 days after the calculated date ${\text{t}}_{\ast }{\text{(τ}}_{\text{c,r}},\text{1917)}=1917.93333333\text{AD}$

1920 AD

December 16, 1920 AD = 1920.96098562 AD

8.3

Gansu-Ningxia border region, China

2.2 perfectly

81.21 days before the calculated date

${\text{t}}_{\ast }{\text{(τ}}_{\text{c,r}},\text{1921)}=\text{1921}\text{.183333333}\text{AD}$

1932 AD

December 25, 1932 AD

= 1932.98288843 AD

7.9

Gansu, China

2.2 perfectly

79.3 days before the calculated date

${\text{t}}_{\ast }{\text{(τ}}_{\text{c,r}},\text{1933)}=19\text{33}\text{.2}\text{AD}$

1950 AD

August 15, 1950 AD

= 1950.62149212 AD

8.6

eastern Xizang-India border region

2.1 perfectly

4.32 days before the calculated date

${\text{t}}_{\ast }{\text{(τ}}_{\text{c,r}},\text{1950)}=\text{1950}\text{.63333333}\text{AD}$

1951 AD

November 24, 1951 AD = 1951.89801505 AD

7.8

Taiwan region, China

2.2 partly

54.06 days after the calculated date

${\text{t}}_{\ast }{\text{(τ}}_{\text{c,r}},\text{1951)}=1951.75\text{AD}$

1988 AD

November 6, 1988 AD

= 1988.85747159 AD

7.7

Myanmar-China border region

2.2 perfectly

6.62 days after the calculated date

${\text{t}}_{\ast }{\text{(τ}}_{\text{c,r}},\text{1988)}=1988.83333333\text{AD}$

1999 AD

September 20, 1999 AD = 1999.72005475 AD

7.7

Taiwan region, China

2.2 partly

29.2 days before the calculated date

${\text{t}}_{\ast }{\text{(τ}}_{\text{c,r}},\text{1999)}=\text{1999}\text{.8}\text{AD}$

2001 AD

November 14, 2001 AD

= 2001.87063655 AD

7.8

southern Qinghai, China

2.2 perfectly

35.07 days before the calculated date

${\text{t}}_{\ast }{\text{(τ}}_{\text{c,r}},\text{2001)}=\text{200}1.\text{96666666}\text{AD}$

2008 AD

May 12, 2008 AD

= 2008.36413415 AD

7.9

eastern Sichuan, China

2.1 perfectly

55.71 days before the calculated date

${\text{t}}_{\ast }{\text{(τ}}_{\text{c,r}},\text{2008)}=\text{2008}.\text{51666666}\text{AD}$