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The nearest planet to the Sun is at superior conjunction on October 8, meaning it's on the other side of the Sun from Earth and passing behind it from our point of view. That also means it's too close to the Sun's glare to be seen until maybe late-November, when it's at greatest eastern elongation on the 24th and sets after sunset. However, even though it's separated from the Sun by 22 degrees at that time, the very shallow angle between the ecliptic and the horizon still makes Mercury very difficult to see, very low in the southwest after sunset. The littlest planet reaches inferior conjunction on December 13, emerging in the predawn sky late in the month. Its close encounters with the Moon this season are all likely too close to the Sun to be seen on the evenings of October 19 and November 20, and again on the morning of December 17.