ClockWatch uses TCP port 13 for NIST or Daytime, UDP port 123 for SNTP, and port 37 for the Time protocol.
Directory Opens a list of timeservers available for time-synchronization.
Test Opens a test screen for testing the connection with the timeserver. List Opens the list of available timeservers to use as a backup. When enabled, this option will find the next available server if the current server is unavailable. ClockWatch will try this next server on the list on the next setting attempt. It will work through the list of servers list until one is found.