What is the significance of December 7th?

A)workers rush to finish Notre Dame Cathedral by that date
https://www.notredamedeparis.fr/en/reopening/december-7-8/

B)Hillary Clinton giving a speech in Little Rock the same day.
https://www.nwaonline.com/news/2024/nov/27/clintons-scheduled-to-speak-in-little-rock-on/