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+Network Working Group                              Alexander A. McKenzie
+RFC # 445                                          BBN-NET
+NIC # 14028                                        January 22, 1973
+
+
+                IMP/TIP Preventive Maintenance Schedule
+
+
+This note presents the current IMP/TIP Preventive Maintenance schedule.
+Preventive Maintenance is scheduled on a monthly basis, and a given
+machine is normally scheduled at the same time each month; wherever
+possible the time is chosen to coincide with the PM time for the Host(s)
+at the site.
+
+It is sometimes necessary to reschedule PM's because of network
+connectivity considerations or for other reasons.  Whenever such
+rescheduling occurs, we will announce the fact as soon as possible via
+two mechanisms - the TIP NEWS and a Journal note (NOT an RFC) to
+Technical Liaisons.  Any permanent changes to the schedule will be
+announced via the RFC mechanism.
+
+All times show below are Eastern Time.
+
+    First Monday (of each month)
+        BBN IMP [0830-1130]
+    First Tuesday
+        BBN TIP [0830-1130]
+        UCSB [1130-1430]
+    First Wednesday
+        CARNEGIE [0830-1130]
+        SRI [1130-1430]
+        XEROX [1500-1800]
+    First Thursday
+        SAAC [0830-1130]
+        UTAH [1030-1330]
+    Second Monday
+        MIT [0830-1130]
+        NOAA [1030-1330]
+    Second Tuesday
+        MITRE [0830-1130]
+        USC [1130-1430]
+    Second Wednesday
+        CCA [0830-1130]
+        STANFORD [1130-1430]
+        RADC [1430-1730]
+
+
+
+
+
+
+McKenzie                                                        [Page 1]
+
+RFC 445         IMP/TIP Preventive Maintenance Schedule     January 1973
+
+
+    Second Thursday
+        BELVOIR [0830-1130]
+        UCSD [1130-1430]
+        PATRICK [0930-1230]
+    Third Monday
+        HARVARD [0830-1130]
+        UCLA [1000-1300]
+    Third Tuesday
+        RAND [1130-1430]
+        SDC [1530-1830]
+    Third Wednesday
+        ILLINOIS [0930-1230]
+        ARPA [0830-1130]
+        AMES IMP [1130-1430]
+    Third Thursday
+        ETAC [0830-1130]
+        FNWC [1130-1430]
+    Fourth Monday
+        CASE [0830-1130]
+        HAWAII [1330-1630]
+    Fourth Tuesday
+        NBS [0830-1130]
+        LBL [1130-1430]
+    Fourth Wednesday
+        LINCOLN [0830-1130]
+        AMES TIP [1130-1430]
+    Fourth Thursday
+        GWC [0930-1230]
+        ISI [1300-1600]
+        ABERDEEN [0830-1130]
+
+
+
+
+
+
+
+
+
+
+       [ This RFC was put into machine readable form for entry ]
+       [ into the online RFC archives by Alex McKenzie with    ]
+       [ support from GTE, formerly BBN Corp.             9/99 ]
+
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+McKenzie                                                        [Page 2]
+