TY - GEN AU - Judah Levine AU - Michael A Lombardi AU - Andrew N Novick C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2002-01-01 05:01:00 DO - https://doi.org/10.6028/NIST.SP.250-59 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 2002 TI - NIST computer time services ::Internet Time Service (ITS), Automated Computer Time Service (ACTS), and time.gov web sites ER -