2018

All events that happened in 2018.

January

 * 4th: Ray Thomas, musician and guest star, died.
 * 7th: "Haw-Haw Land" aired for the first time.
 * 14th: "Frink Gets Testy" aired for the first time.
 * 18th: was released in the UK.

February

 * 4th: John Mahoney, actor and guest star, died.
 * 15th: was released in the UK.

March

 * 14th: Stephen Hawking, physicist and guest star, died.
 * 15th: was released in the UK.
 * 18th: "Homer Is Where the Art Isn't" aired for the first time.
 * 25th: "3 Scenes Plus a Tag from a Marriage" aired for the first time.

April

 * 1st: "Fears of a Clown" aired for the first time.
 * 8th: "No Good Read Goes Unpunished" aired for the first time.
 * 15th: R. Lee Ermey, actor and guest star, died.
 * 15th: "King Leer" aired for the first time.
 * 17th: Carl Kasell, radio host and guest star, died.
 * 19th: was released in the UK.
 * 22nd: "Lisa Gets the Blues" aired for the first time.
 * 23rd: Arthur B. Rubinstein, music composer, died.
 * 29th: "Forgive and Regret" aired for the first time.

May

 * 6th: "Left Behind" aired for the first time.
 * 13th: "Throw Grampa from the Dane" aired for the first time.
 * 14th: Tom Wolfe, author and guest star, died.
 * 17th: was released in the UK.
 * 20th: "Flanders' Ladder" aired for the first time.
 * Season 29 ended.

June

 * 8th: Anthony Bourdain, chef and guest star, died.
 * 12th: Springfield Confidential was released.
 * 21st: was released in the UK.
 * 28th: Harlan Ellison, author and guest star, died.

July

 * , music composer, died.

September

 * 30th: Season 30 started.
 * "Bart's Not Dead" aired for the first time.

October

 * 7th: "Heartbreak Hotel" aired for the first time.
 * 14th: "My Way or the Highway to Heaven" aired for the first time.
 * 21st: "Treehouse of Horror XXIX" aired for the first time.

November

 * 4th: "Baby You Can't Drive My Car" aired for the first time.
 * 11th: "From Russia Without Love" aired for the first time.
 * 12th: Stan Lee, comic book writer and guest star, died.
 * 18th: "Werking Mom" aired for the first time.
 * 24th: Ricky Jay, magician and guest star, died.
 * 25th: aired for the first time.
 * 30th: George H. W. Bush, former president who appeared in The Simpsons 20th Anniversary Special – In 3-D! On Ice!, died.

December

 * 2nd: "Daddicus Finch" aired for the first time.
 * 9th: "'Tis the 30th Season" aired for the first time.
 * 17th: Penny Marshall, actress and guest star, died.