$InstallationDate
As of Version 6.0, $InstallationDate is no longer supported in typical computer system configurations.
$InstallationDate
gives the date and time at which the copy of the Wolfram System kernel you are running was installed.
Examples
Basic Examples (1)
The installation date, is given as DateList:
Wolfram Research (1996), $InstallationDate, Wolfram Language function, https://reference.wolfram.com/language/ref/$InstallationDate.html.
Text
Wolfram Research (1996), $InstallationDate, Wolfram Language function, https://reference.wolfram.com/language/ref/$InstallationDate.html.
CMS
Wolfram Language. 1996. "$InstallationDate." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/$InstallationDate.html.
APA
Wolfram Language. (1996). $InstallationDate. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/$InstallationDate.html