« first day (1773 days earlier)      last day (1645 days later) » 

5:28 AM
The same solution idea to be found in the book, (Almost) Impossible Integrals, Sums, and Series. — user97357329 Jul 7 at 6:18
I don't have that book, but I will take your word for it. — LeBlanc Jul 27 at 9:51
@LeBlanc You could probably find the book online, but if you can't find it, you can send me an email.
You can find my website (and there also my email) from my profile page.
 

« first day (1773 days earlier)      last day (1645 days later) »