If you go here:

https://www.ingersolllockwood.com/countdown-2021/

You will find a strange countdown clock. Above the clock is written:

Countdown 2021

What day was the US Constitution signed?

Who was born (many years later) the next day?

There is a hidden message under the clock if you highlight this area:

Tic Toc

Shall we play a game?

NCSWIC

Well, I think I know what the countdown is for.

What day was the US Constitution signed? September 17, 1787

Who was born (many years later) the next day? (September 18)

This question was harder. I looked at presidents, politicians, scientists, etc., and nothing jumped out at me. Until I went here:

https://www.bornglorious.com/united_states/birthday/?pf=82955&pd=0918

Guess what, folks? John McAfee was born Sept 18, 1945

Could the countdown clock be the date the data download becomes public???