Fland Canyon - Set in the past (1988) and shows a younger version of the family (except for Maggie as she wasn't born yet), However, some episodes of Seasons 25 and 26 are also set in 2014, with the family at their normal ages.

A floating timeline (also known as a sliding timescale) is a device used in fiction, particularly in comics and animation, to explain why characters age little or not at all over a period of time - despite real-world markers like notable events, people and technology appearing in the works and correlating with the real world.

If you define the timeline based on the characters' ages, it becomes clear that no one has aged in all this time. Bart is still 10, Lisa is still 8. There is no real timeline for the show.

Homer recalls a dysfunctional Simpson-family vacation to the Grand Canyon with the practically perfect Flanders family that turned into a memorable bonding experience. It also features a Disney inspired couch gag animated by Disney animator Eric Goldberg .

Even if its technically only 2 years ago, The Simpsons timeline has been halted a lot earlier. The trip on the rubberboat had some good interaction between the two, and I liked how the episode ended with Ned joining into the conversation, and later on visited a stamp museum.