The time at which an event is recorded by a computer.

Covers file creation/modification dates and times (eg: 12/12/12 12:12 Text.log as might show in response to a DOS DIR command) and event times (eg: 2012-10-18 06:40:03,582 INFO hello as might be an entry within a log file). Also covers timecodes for synchronisation purposes, such as used in video production.

See Wikipedia.