Greetings, I cannot help but notice that the Hurd port still depends on 'ntpdate' to sync its clock upon bootup. The key problem is that Debian has migrated to 'src:ntpsec' which made 'bin:ntpdate' a transitional package. However, 'rdate' seemingly has been ported to Hurd. Assuming that it is verified to work, it could be usefull to migrate the Hurd port to it.
Martin-Éric