Daytime

Public addresses last verified: June 2012

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The Daytime protocol (Daytime) is one of several time retrieval protocols, and although now overshadowed by the SNTP, was a popular choice on early microcomputers. Server access requires using a simple Daytime client (clock program). It is strongly recommended that Daytime servers never be queried more frequently than once every 6 seconds. Below are addresses to public Daytime servers.
[IANA Port assignment = 13]

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Daytime Servers

• nist.colorado-networks.com - (64.111.21.121) - Colorado Springs, Colorado
• nist.expertsmi.com - (50.77.217.185) - Monroe, Michigan
• nist.netservicesgroup.com - (64.113.32.5) - Southfield, Michigan
• nist-time-server.eoni.com - (216.228.192.69) - La Grande, Oregon
• nist1.aol-ca.symmetricom.com - (207.200.81.113) - Mountain View, California
• nist1.aol-va.symmetricom.com - (64.236.96.53) - Reston, Virginia
• nist1.columbiacountyga.gov - (216.119.63.113) - Columbia County, Georgia
• nist1.symmetricom.com - (69.25.96.13) - San Jose, California
• nist1-atl.ustiming.org - (64.250.177.145) - Atlanta, Georgia
• nist1-chi.ustiming.org - (208.66.175.36) - Chicago, Illinois
• nist1-la.ustiming.org - (64.147.116.229) - Los Angeles, California
• nist1-lnk.binary.net - (216.229.0.179) - Lincoln, Nebraska
• nist1-lv.ustiming.org - (64.250.229.100) - Las Vegas, Nevada
• nist1-nj.ustiming.org - (96.47.67.105) - Bridgewater, New Jersey
• nist1-ny.ustiming.org - (64.90.182.55) - New York City, New York
• nist1-pa.ustiming.org - (206.246.122.250) - Hatfield, Pennsylvania
• nist1-sj.ustiming.org - (216.171.124.36) - San Jose, California
• nisttime.carsoncity.k12.mi.us - (66.219.116.140) - Carson City, Michigan
• ntp-nist.ldsbc.edu - (198.60.73.8) - Salt Lake City, Utah
• time.nist.gov - (round_robin) - Multiple NIST locations
• time-a.nist.gov - (129.6.15.28) - NIST, Gaithersburg, Maryland
• time-a.timefreq.bldrdoc.gov - (132.163.4.101) - NIST, Boulder, Colorado
• time-b.nist.gov - (129.6.15.29) - NIST, Gaithersburg, Maryland
• time-b.timefreq.bldrdoc.gov - (132.163.4.102) - NIST, Boulder, Colorado
• time-c.timefreq.bldrdoc.gov - (132.163.4.103) - NIST, Boulder, Colorado
• time-nw.nist.gov - (131.107.13.100) - Redmond, Washington
• utcnist.colorado.edu - (128.138.140.44) - Boulder, Colorado
• utcnist2.colorado.edu - (128.138.141.172) - Boulder, Colorado
• wwv.nist.gov - (24.56.178.140) - WWV, Fort Collins, Colorado
• no_DNS_address - (38.106.177.10) - Chicago, Illinois

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