GSync provides revision control for rclone remote's without it (Most notably Google Drive, lacking folder revision control)
chmod 755 ./GSync.py
Then put appropriate running times in your crontab file for both syncing and cleaning. See
./GSync.py --help
for more info.
Backup directory's timestamp is the time when it was copied, not when the backup was actually created. For example, if your backup cronjob runs every 1 day, backups will actually appear one day newer than they actually are.