In Latin, Annus Mirabilis means miraculous year. This means Annus Mirabilis is the exact opposite of Annus Horribilis.
Apparently, we are all sick and tired of Annus Horribilises. From wars and persecutions, to earthquakes, weather disasters and pandemics. To make matters worse, one of the Internet's biggest preservationists, Internet Archive, suffered a setback in the courthouse, effectively endangering the future of preserving the past. But all of this is nothing compared to the Great Tribulation, because during the Great Tribulation, spreading the true Gospel will be a crime that can get you executed in multiple different ways, and nowhere on Earth will the true Gospel be legal during these terrible times...
However, when the Great Tribulation gets cut short thanks to Christ coming back, the Evil One will be serving a prison sentence in the bottomless pit for 1000 years. By the way, the 1000 years will be in Anno Mundi years because Jesus will make us go back to using the Anno Mundi Calendar, which was always the correct calendar since the beginning of man's days on Earth. This means when Earth comes under God's jurisdiction, there will be 1000 years of Annus Mirabilises. Talk about utopia...