86400
Seconds per day
24 x 60 x 60. One of the most common unexplained literals in real codebases — usually a cache TTL or cron-ish interval. (Leap-second pedants note: not every UTC day.)
Similar magic numbers
| value | name | category |
|---|---|---|
| 64 00 00 00 | Intel PROset-Wireless Profile | file-signature |
| 04 00 00 00 | INFO2 Windows recycle bin | file-signature |
| 00 00 00 00 14 00 00 00 | Windows Disk Image | file-signature |
| 1A 00 00 04 00 00 | Lotus Notes database | file-signature |
| 0x80004005 | E_FAIL | hresult |