It seems that in the West, every turn of the century brings about some inexplicable rumors, and these rumors always like to mingle with disasters, especially at the millennium change, where the rumors are particularly exaggerated. It is said that when the year 1000 was approaching, constant plagues and famines had all of Europe in a state of great anxiety, and many people believed that the end of the world was imminent.
Even by the year 2000, it was still the same, most notably Nostradamus's prophecies and the Millennium Bug; one involving mysticism and the other science, complementing each other quite well. This is probably not unrelated to the religious factors rooted in Western society.
Of course, when the most luxurious crystal ball to date dropped in Times Square and the Millennium chimes rang out, the great demon king did not descend from the sky, nor did nuclear bombs launch just because the timers jumped to 00; the world operated as usual in a spectacle of song and dance.