If we are being pedantic, the number of days that the pilot can determine it is still safe to fly varies depending on the length of the month and the day of the month in which the last annual was completed. I guess a plane that had its annual completed on February 1 is inherently less safe than a plane that came out of annual on March 1, but inherently more safe than an aircraft that came out of annual on February 28.
I knew someone would bring that up. I wasn’t in the mood to write all that out to illustrate the point.