| versions = The Day The World Went Away<br>The Day The World Went Away (Instrumental) (Apple Music)<br>The Day The World Went Away (Instrumental) (''Deviations 1'')<br>The Day The World Went Away (Single Version)<br>The Day The World Went Away (Quiet)<br>The Day The World Went Away (Porter Ricks mix)<br>The Day The World Went Away (''[[And All That Could Have Been (halo)|And All That Could Have Been]]'')<br>The Day The World Went Away (''[[Still]]'')
| live = [[Fragility]] through [[Performance 2007]]<br>[[Wave Goodbye Tour]] through [[Tension 2013 Tour]]<br>[[NIN 2014 Europe/UK Tour]] through present
}}'''"The Day The World Went Away"''' is the second track on the Left disc of ''[[The Fragile (halo)|The Fragile]].'' It was released as a single preceding the release of ''The Fragile'' and received the designation of [[Halo numbers|Halo 13]].
The song's lyrics are rumored to be about the death of [[Trent Reznor]]'s maternal grandmother, Clara, which occurred before ''The Fragile'' was recorded. Analysis of the lyrics do support the theory of this song being about a reaction to death, but Reznor has not explicitly revealed his lyrical inspiration.