diff --git a/Detectors/Calibration/testMacros/getRunParameters.cxx b/Detectors/Calibration/testMacros/getRunParameters.cxx
index c06926511c95d..d3f9b0a2ece69 100644
--- a/Detectors/Calibration/testMacros/getRunParameters.cxx
+++ b/Detectors/Calibration/testMacros/getRunParameters.cxx
@@ -53,6 +53,18 @@ void writeDurationToFile(long duration)
   fclose(fptr);
 }
 
+void writeSORToFile(long sor)
+{
+
+  FILE* fptr = fopen("SOR.txt", "w");
+  if (fptr == nullptr) {
+    LOGP(fatal, "ERROR: Could not open file to write SOR!");
+    return;
+  }
+  fprintf(fptr, "%ld", sor);
+  fclose(fptr);
+}
+
 void writeBFieldToFile(float b)
 {
 
@@ -165,6 +177,7 @@ int main(int argc, char* argv[])
       ir = -1.f;
       writeIRtoFile(ir);
       writeDurationToFile(run_O2duration);
+      writeSORToFile(tsSOR);
       return 0;
     }
   }
@@ -204,6 +217,7 @@ int main(int argc, char* argv[])
   }
   writeIRtoFile(ir);
   writeDurationToFile(duration);
+  writeSORToFile(tsSOR);
 
   return 0;
 }
diff --git a/prodtests/full_system_test.sh b/prodtests/full_system_test.sh
index 24215276fd463..8e252c5a8378f 100755
--- a/prodtests/full_system_test.sh
+++ b/prodtests/full_system_test.sh
@@ -81,6 +81,10 @@ fi
 
 [[ "$FIRSTSAMPLEDORBIT" -lt "$RUNFIRSTORBIT" ]] && FIRSTSAMPLEDORBIT=$RUNFIRSTORBIT
 
+# get run start time
+taskwrapper run_params.log o2-calibration-get-run-parameters -r $RUNNUMBER
+runStartTime=`cat SOR.txt`
+
 # allow skipping
 JOBUTILS_SKIPDONE=ON
 # potentially enable memory monitoring (independent on whether DPL or not)
@@ -162,6 +166,7 @@ taskwrapper collcontext.log o2-steer-colcontexttool \
   --maxCollsPerTF ${NEvents} \
   --orbitsEarly ${OrbitsBeforeTf} \
   --bcPatternFile ccdb \
+  --timestamp ${runStartTime} \
   ${QEDSPEC}
 
 # Include collision system for TPC loopers generation