The Moon on its way out into December’s evening sky passes as many as six planets in as many days (if you count Pluto as a planet).
The arrows through the planets and Sun show their change of position, against the starry background, over 5 days.
A timetable of the Moon’s appulses (nearest approaches) to the planets:
Nov 30 – 3.6° north of Saturn (only about 9° from the Sun)
Dec 1 – 7.1° north of Mercury (about 18° from the Sun)
Dec 2 – 2.8° north of Pluto (35° from the Sun)
Dec 3 – 5.8° north of Venus (44° from the Sun)
Dec 5 – 2.9° north of Mars (66° from the Sun)
Dec 6 – 0.67° north of Neptune (84° from the Sun)
Those angular distances are as measured from the center of the Moon. From our northern part of the Earth, the Moon appears somewhat farther south, so the angles are wider.
Only Venus and Mars are bright enough, and far enough from the Sun, to make a showing for the naked eye.
By December 6, the Moon will have sloped down to the ecliptic (it is at its descending node on that day), so the encounter with Neptune is the closest. Indeed the Moon will occult Neptune, as seen acrpss North America though after sunset only on the northeastern fringes.
Detail from the “Occultations” section of Astronomical Calendar 2016, showing very approximately the path from within which Neptune becomes hidden by the Moon.
Somewhere on the website www.occultations.org of the International Occultation Timing Association (IOTA) there must surely be a detailed map and predictions of timing for this event, but I have not found it; perhaps someone can point us to it.