+1m doesn't work on Ubuntu 24.04 (GNU findutils version 4.9.0)
On sourcing the setup script:
find: invalid argument `+1m' to `-mtime'
find: invalid argument `+15d' to `-mtime'
On sourcing the setup script:
find: invalid argument `+1m' to `-mtime'
find: invalid argument `+15d' to `-mtime'