The term "beginning of November" is correct and usable in written English. It can be used to refer to the first part of the month of November. For example: "I'm looking forward to the beginning of November, when the days start to get cooler."
We meet at the beginning of November.
A move has been rumoured since the beginning of November.
It was an afternoon at the beginning of November.
At the beginning of November we had a school performance.
The winner will be announced at the beginning of November.
The heat absorbing starts in mid April, ends at the beginning of November, and lasts over 230 days.
The episode was filmed over three days at the end of October and beginning of November 2002.
REINECKE: That was at the end of October or the beginning of November 1944.
The Sun was intensely active from late October to the beginning of November 2003.
It was believed to have been produced between early October and the beginning of November 2010.
The RTL algorithm identified that a seismic quiescence started from the beginning of November 2001 and reached its minimum at the end of May 2002.
Ludwig does not simply clarify my doubts with English writing, it enlightens my writing with new possibilities
Simone Ivan Conte
Software Engineer at Adobe, UK