https://cran.stat.auckland.ac.nz/web/packages/parsedate/index.html
CRAN: Package parsedate
Parse dates automatically, without the need of specifying a format. Currently it includes the git date parser. It can also recognize and parse all ISO 8601...
cranpackage
https://curl.se/mail/lib-2013-12/0076.html
Curl: [PATCH] lib/parsedate: Fixed an overflow check optimized out because of undefined behavior