the most saddest time of apocalyptic fiction

Apocalyptic fiction is a sub-genre of science fiction that is concerned with the end of civilization due to a potentially existential catastrophe such as nuclear warfare, pandemic, extraterrestrial attack, impact event, cybernetic revolt, technological singularity, dysgenics, supernatural phenomena, divine judgement, climate change, resource depletion, zombies or some other general disaster. Post-apocalyptic fiction is set in a world or civilization after such a disaster. The time frame may be immediately after the catastrophe, focusing on the travails or psychology of survivors, or considerably later, often including the theme that the existence of pre-catastrophe civilization has been forgotten (or mythologized). Post-apocalyptic stories often take place in an agrarian, non-technological future world, or a world where only scattered elements of technology remain. There is a considerable degree of blurring between this form of science fiction and that which deals with dystopias.
The genres gained in popularity after World War II, when the possibility of global annihilation by nuclear weapons entered the public consciousness. However, recognizable apocalyptic novels have existed at least since the first quarter of the 19th century, when Mary Shelley's The Last Man was published.Additionally, the subgenres draw on a body of apocalyptic literature, tropes, and interpretations that are millennia old.

Numerous societies, including the Babylonian and Judaic traditions, have produced apocalyptic literature and mythology, some of which dealt with the end of the world and of human society.The scriptural story of Noah and his Ark describes the end of a corrupt civilization and its replacement with a remade world. The first centuries AD saw the creation of various apocalyptic works; the best known (due to its inclusion in the New Testament) is the Book of Revelation (from which the word apocalypse originated, meaning "revelation of secrets"), which is replete with prophecies of destruction.In the study of religious works, apocalyptic texts or stories, are those that disclose hidden secrets either by taking an individual literally into the heavens or into the future. Most often these revelations about heaven and the future are used to explain why some currently occurring event is taking place.
Outside of the corpus of New Testament apocrypha also includes apocalypses of Peter, Paul, Stephen, and Thomas, as well as two of James and Gnostic Apocalypses of Peter and Paul. The beliefs and ideas of this time, including apocalyptic accounts excluded from the Bible, influenced the developing Christian eschatology.[citation needed]
Further apocalyptic works appeared in the early Middle Ages. The 7th century Apocalypse of Pseudo-Methodius includes themes common in Christian eschatology; the Prophecy of the Popes has been ascribed to the 12th century Irish saint Malachy, but could possibly date from the late 16th century. Islamic eschatology, related to Christian and Jewish eschatological traditions, also emerged from the 7th century. Ibn al-Nafis's 13th century Theologus Autodidactus, an Arabic novel, used empirical science to explain Islamic eschatology