Each demon is more powerful during a certain month.

January: Belial: Demon of ungodly wickedness, and destruction; inspires lawlessness and worthlessness. From Hebrew Bel'yya'al or Beliyya'al. c.1300. (Judeo-Christian, Satanic) images

February: Leviathan: An enormous demon of darkness and chaos; associated with the sea; inspires arrogance and envy. From Hebrew Livyathan, Livyatan. c.1380. (Judeo-Christian) images

March: Satan: An angel expelled from heaven; evil personified; the great adversary; inspires mankind to turn away from God; inspires mortal sins. From Greek Satanas, from Hebrew śāṭān. bef.900. (Islamic, Judeo-Christian, Satanic) images

April: Belphegor: Demon of indifference; inspires extreme laziness and spiritual apathy. From Hebrew Baal-Peor, Bel-Phegor. (Judeo-Christian) image

May: Lucifer: A great angel cast into Hell; also known as the light bringer, the bearer of light, and the morning star; inspires pride and rebellion. From Latin Lucifer. bef.1000. (Islamic, Judeo-Christian, Satanic) images

June: Berith: Demon of covenants; the great red harbinger; a kingmaker; worshipped by necromancers and alchemists; inspires megalomania. From Hebrew Baal-Berith. (Judeo-Christian)

July: Beelzebub: The prince of demons; the lord of the flies; inspires gluttony, unholy desire, jealousy, war, and murder. From Hebrew Ba'al-Z'bub, Ba'al-Z'bul. bef.1100. (Islamic, Judeo-Christian, Satanic) image

August: Astaroth: The prince of Hell; the treasurer of Hell; a harbinger; associated with serpents, and the classical sciences; inspires laziness and vanity. bef.1600. From Hebrew Ashtaroth. (Islamic, Judeo-Christian, Satanic) image

September: Thammuz: Ambassador to Hell; able to die and return from the underworld; a symbol of rebirth and mourning; inspires torture. From Hebrew Tammuz. c.1530. (Judeo-Christian, Sumerian)

October: Baal: The lord; the first monarch of Hell; associated with the power of invisibility and wisdom; inspires idolatry. From Hebrew Ba'al. c.1300 (Judeo-Christian) image

November: Asmodai: Demon of wrath; prince of demons; the father of monsters; inspires gambling, deceit, lust, and revenge. From Avestan Aesma-daeva. (Judeo-Christian) image

December: Moloch: The King; inspires shameful acts, child abuse and abduction. From Hebrew molekh, melekh. (Judeo-Christian, Sumerian) image