/usr/lib/x86_64-linux-gnu/liblunar-date-2.0.so is in liblunar-date-dev 2.4.0-2ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/liblunar-date-2.0.so.0.399.1
/usr/lib/x86_64-linux-gnu/liblunar-date-2.0.so.0.399.1