Because this is a default naming convention, there isn't one "proper" post or single viral video associated with it. Instead, it often appears in:
Sometimes "raw" filenames are used ironically in "proper post" memes to simulate a "leaked" or unedited feel, though no specific famous video uses this exact timestamp as its primary identity. 2021-10-06 15-04-27.mp4
The filename is a generic timestamp format typically generated by cameras, screen recorders (like OBS), or smartphones. Because this is a default naming convention, there
If you saw this referenced in a specific community (like a gaming sub-reddit or a Discord server), it likely refers to a or a specific clip shared within that group. screen recorders (like OBS)
It appears on sites like the Internet Archive or various wikis where raw footage is uploaded without being renamed.