Bad Sun happens every 24th of the month, so it can happen to new players if they start the game on this day. You can either wait and start the game the next day, or wait one game day and the event will pass by itself at sunset.
oh, i think i explained incorrectly
now that i know what event it was, i actually want to get through it, so as to get the achievement.
but i don't know if me exiting out of the event after it had started means that it won't start again on this save today, locking me out of it, or if i can keep retrying for it (in which case, i'd be curious what i'd need to do to get the best chance of it happening/to not accidentally guarantee that it won't)