Map of survived nations
This is my timeline where Y2K affected The nuclear bombs and bombarded and destroyed Most largest cities and countries except some, that are city-states.
Timeline[]
POD: Before 1999, some experts and scholars expressed concern about the Y2K problem, but their appeals were ignored. So much so that 1999 became the last year of human civilization.
On January 1st, 2000, Y2K affected The Nuclear weapons systems, causing Nuclear bombs to hit Cities like Los Angeles, San Francisco, London man more over the coarse of just 2 hours, Some smaller or less strategist cities and States like Santa Catarina, Alaska and others survived the initial bombings, but overtime fallout and nuclear winter soon sets in.