case, venue, celebration, festival, extravaganza, fete, conference, expo, fundraiser, festivity, more...

stagnation, inactivity, routine, normalcy, uneventfulness

natural disaster, accident, terrorist attack, war, more...

important, great, single, historical, major, particular, traumatic, rare, significant, annual, next

an experience,   something happening,   what's happening,   what happens,   ioc part,   what's going on,   what is happening,   thing that happened,   what is going on,   calendar entry