There is also DAYTIME-1.12 server and client, also on hobbes.
Notes from the readme:
The server implements the RFC 867 (daytime), RFC 868 (time) and RFC
1361 (SNTP) services, both for TCP and UDP protocols. The client can
use any of these services and either protocol to retrieve the time
from another host and adjust its local time. Using SNTP over TCP is an
extension over RFC 1361 (although mentioned there).