Twilight Zone

The Twilight Zone (marketed as Twilight Zone for its final two seasons) is an American anthology television series. Each episode presents a stand-alone story in which characters find themselves dealing with often disturbing or unusual events, an experience described as entering "the Twilight Zone," often with a surprise ending and a moral. Although predominantly science-fiction, the show's paranormal and Kafkaesque events leaned the show towards fantasy and horror. The phrase “twilight zone,” inspired by the series, is used to describe surreal experiences. The Twilight Zone has four different series; the first airing from 1959 - 1964; the second airing from 1985 - 1989; the third airing from 2002 - 2003; the fourth first premiering in 2019 and still ongoing.

Throughout the numerous series, there're numerous episodes that delve into Apocalyptic and Post Apocalyptic scenarios and worlds.

= 1959 - 1964 =

"Time Enough At Last" (S01Ep8)
This episode's apocalyptic events follow after a Nuclear War that destroys all life on the planet and leaving it as a complete wasteland. Throughout the episode it follows Mr. Henry Bemis, the last man (and last lifeform presumably) on planet Earth.

"Two" (S03Ep1)
While not too detailed, the main setting in the episode takes place in a deserted town that has not seen a human being since the end of an apocalyptic war five years before.

"The Midnight Sun" (S03Ep10)
The main story revolves around two apocalyptic scenarios taking place on Earth. The first one, which has Earth moving closer to the Sun and slowly burning all life to death, is revealed to be a fever dream by the main character. In reality, the Earth's moving away from the sun and all life is freezing to death.

"The Old Man in the Cave" (S05Ep07)
the synopsis of this episode reveals that it takes place ten years after a 1964 Nuclear Holocaust. Much of the available food even then is sometimes contaminated with radiation, causing death to anyone who eats it. It is unclear as to humanity's current state in the episode.

= 1985 - 1989 =

"Quarantine" (S01Ep17)
The setting takes place in the year 2347, in which In 2043, a nuclear exchange wiped out eighty-percent of the human population and removed advanced cities, factories, and other such structures. The 200,000 survivors of the nuclear exchange pledged to never trust machines again. Technology is replaced by advances in human awareness and spiritual growth, the organic replaces the mechanical, and they live in balance and harmony with all life on the planet in what is referred to as a "biological gestalt.", Every need in this society met through genetic engineering, psionics, or super-science in harmony with nature. The Humans in this world have no defenses and violence not in their nature.

"Voices in the Earth" (S02Ep10)
The planet Earth in this episode is completely destroyed, and devoid of all life for a thousand years prior to the episode's current time. How this occurred and why is never specified.

"Many, Many Monkeys" (S03Ep25)
The planet is suffering through a seemingly worldwide epidemic in which Humans had become struck blind. The episode hypothesizes that this involves around the Three Wise Monkeys (Speak no evil, See no evil, Hear no evil).

External Link
The Twilight Zone Wiki