Network Time Client (ver 1.2) Abandoned Freeware The Network Time Client adjusts the PC clock by using TCP/IP to connect to a Daytime protocol server. Most Windows PCs use NTP to synchronize the clock (as the NTP feed comes directly from an Atomic Clock). However, a normal computer serving the DAYTIME protocol can give the exact time to within 500ms (half a second) of NTP time, making Daytime a practical solution on closed Intranets.