The inauguration of 19th President
"Rutherford B. Hayes",was on :
5th of March 1877
20 Adar 5637>>>5+6+3+7=21=777

After 121 years JFK JR visited the W.H on
5th of March 1998

Friday
5th of March 2021
21st of Adar 5781>>5+7+8+1=21=777
21st of Rajab(7) 1442

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In response Jack Wightman to his Publication

And another : The inauguration of Rutherford B. Hayes as the 19th President of the United States took place publicly on Monday, March 5, 1877