diff --git a/doc/ChangeLog b/doc/ChangeLog
index 03faca2e66..6a7d9d45a6 100644
--- a/doc/ChangeLog
+++ b/doc/ChangeLog
@@ -1,7 +1,7 @@
 ===============================================================
 Tag name: ctsm5.3.018
 Originator(s): slevis (Samuel Levis,UCAR/TSS,303-665-1310)
-Date: Thu 09 Jan 2025 04:32:03 PM MST
+Date: Fri 10 Jan 2025 04:06:17 PM MST
 One-line Summary: Change history time to be the middle of the time bounds
 
 Purpose and description of changes
@@ -47,45 +47,47 @@ Caveats for developers (e.g., code that is duplicated that requires double maint
 Changes to tests or testing:
  This tag introduces changes to the mosart/rtm testlists.
 
+ FAIL RXCROPMATURITYSKIPGEN_Ld1097.f10_f10_mg37.IHistClm60BgcCrop.derecho_intel.clm-cropMonthOutput RUN
+ I did not label this failure EXPECTED because the fix comes in later in this series of "history" tags, in particular ctsm5.3.020.
+
 Testing summary:
 ----------------
 
  [PASS means all tests PASS; OK means tests PASS other than expected fails.]
 
+  build-namelist tests
+
+    derecho - PASS
+
   python testing (if python code has changed; see instructions in python/README.md; document testing done):
 
-    derecho -
+    derecho - PASS
 
   regular tests (aux_clm: https://github.com/ESCOMP/CTSM/wiki/System-Testing-Guide#pre-merge-system-testing):
 
-    derecho ----- previously OK, will repeat
-    izumi ------- previously OK, will repeat
+    derecho ----- OK
+    izumi ------- OK
 
   mosart
-    derecho ----- previously OK, will repeat
-    izumi ------- previously OK, will repeat
+    derecho ----- OK
+    izumi ------- OK
 
   rtm
-    derecho ----- previously OK, will repeat
-
-  any other testing (give details below):
-
-  ctsm_sci
-     derecho ----
-
-If the tag used for baseline comparisons was NOT the previous tag, note that here:
-
+    derecho ----- OK
 
 Answer changes
 --------------
 
-Changes answers relative to baseline: Only time variable
+Changes answers relative to baseline: Only time variable, plus read caveat
 
   Summarize any changes to answers, i.e.,
     - what code configurations: all
     - what platforms/compilers: all
     - nature of change: only the time variable
 
+ Caveat: We see diffs in mosart and cpl output that will be eliminated later in this series of "history" tags, in particular ctsm5.3.020. They are discussed here:
+https://github.com/ESCOMP/CTSM/pull/2838#issuecomment-2477608383
+https://github.com/ESCOMP/MOSART/issues/103#issuecomment-2479679014
 
 Other details
 -------------
diff --git a/doc/ChangeSum b/doc/ChangeSum
index 4e76b74c0b..51769e49a2 100644
--- a/doc/ChangeSum
+++ b/doc/ChangeSum
@@ -1,6 +1,6 @@
 Tag                   Who      Date  Summary
 ============================================================================================================================
-       ctsm5.3.018   slevis 01/??/2025 Change history time to be the middle of the time bounds
+       ctsm5.3.018   slevis 01/10/2025 Change history time to be the middle of the time bounds
        ctsm5.3.017   slevis 01/09/2025 Merge tmp-241219 branch to master
 tmp-241219.n03.ctsm5.3.016  01/09/2025 Bug fix for izumi nag tests to pass (slevis)
 tmp-241219.n02.ctsm5.3.016  01/08/2025 FATES hydro test update (glemieux)