/usr/share/perl5/DateTime/ is in libdatetime-format-epoch-perl 0.13-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/perl5/DateTime/Format/
/usr/share/perl5/DateTime/Format/Epoch/
/usr/share/perl5/DateTime/Format/Epoch.pm
/usr/share/perl5/DateTime/Format/Epoch/ActiveDirectory.pm
/usr/share/perl5/DateTime/Format/Epoch/DotNet.pm
/usr/share/perl5/DateTime/Format/Epoch/JD.pm
/usr/share/perl5/DateTime/Format/Epoch/Lilian.pm
/usr/share/perl5/DateTime/Format/Epoch/MJD.pm
/usr/share/perl5/DateTime/Format/Epoch/MacOS.pm
/usr/share/perl5/DateTime/Format/Epoch/RJD.pm
/usr/share/perl5/DateTime/Format/Epoch/RataDie.pm
/usr/share/perl5/DateTime/Format/Epoch/TAI64.pm
/usr/share/perl5/DateTime/Format/Epoch/TJD.pm
/usr/share/perl5/DateTime/Format/Epoch/Unix.pm