Mason and Maskelyne in London (p257)
M&D sign contract (p246)
Royal Proclamation of 1763 issued. Draws the Proclamation Line.
M&D reach Philadelphia (p257)
"...when word arriv'd of the Conestoga Massacre...[they] were taking their first Obs..." (p306)
There is a date error in the book for this day, see 29 Dec.
It is hard to tell if the events on (p302) and (p304)happen this day because Dixon says that it's "Wednesday Market." But that night on(p310) they find it too cloudy for Obs, which makes it the night of the 29th, the only cloudy night that week.
Events before the main story
Events After The Story