The DAYTIME service is an Internet protocol defined in RFC 867. It is intended for testing and measurement purposes in computer networks.
A host may connect to a server that supports the DAYTIME protocol, on either TCP or UDP port 13. The server then returns the current date and time as an ASCII string with an unspecified format.
DAYTIME. (2007, September 21). In Wikipedia, The Free Encyclopedia. Retrieved December 22, 2007, from