And I quote:
Any dedicated moon-watcher will know that, regardless of the year, I have taken a good many liberties with the lunar cycle- usually to take advantage of days (Valentine's, July 4th, etc.) which "mark" certain months in our minds. To those readers who feel that I didn't know any better, I assert that I did...but the temptation was simply too great to resist.
Stephen King
August 4th, 1983
This is printed on the very last page in the Signet edition.
You're welcome.
PS- M-O-O-N- that spells 'answer'.
Ok, but the point was he didn't have to fudge that much. I knew when I was reading it that of the 4th of July had a full moon then Halloween was going to be close to a full moon. I did about two minutes of research and discovered 1974 and it's full moons. To be fair I had a book that listed new and full moons for several thousand years in the past. It was an astrology reference book I found at goodwill for about fifty cents. I have an extremely low opinion of astrology, but hey, it was cheap and it came in handy that once, and only that once.
For the record, full moons 1974--
Jan 8
Feb 6
Mar 8
Apr 6
May 6
June 4
July 4
Aug 3
Sep 1
Oct 1
Oct 31
Nov 29
Dec 29
No matter how great the temptation, he mucked up the full moons when he could have gotten away without doing so