diff --git a/traffic_monitor/cache/cache.go b/traffic_monitor/cache/cache.go
index 339c4a5f5c..9bedd3494f 100644
--- a/traffic_monitor/cache/cache.go
+++ b/traffic_monitor/cache/cache.go
@@ -23,6 +23,7 @@ import (
 	"fmt"
 	"io"
 	"regexp"
+	"strconv"
 	"time"
 
 	"github.com/apache/trafficcontrol/lib/go-log"
@@ -306,6 +307,17 @@ func (handler Handler) Handle(id string, rdr io.Reader, format string, reqTime t
 		handler.resultChan <- result
 		return
 	}
+	if val, ok := miscStats["plugin.system_stats.timestamp_ms"]; ok {
+		valString := fmt.Sprintf("%s", val)
+		valInt, valErr := strconv.ParseInt(valString, 10, 64)
+		if valErr != nil {
+			log.Errorf("parse error '%v'", valErr)
+			result.Error = valErr
+			handler.resultChan <- result
+			return
+		}
+		result.Time = time.UnixMilli(valInt)
+	}
 	if value, ok := miscStats[rfc.Via]; ok {
 		result.ID = fmt.Sprintf("%v", value)
 	}
diff --git a/traffic_monitor/cache/cache_test.go b/traffic_monitor/cache/cache_test.go
index b20a392507..7d3e685e75 100644
--- a/traffic_monitor/cache/cache_test.go
+++ b/traffic_monitor/cache/cache_test.go
@@ -20,10 +20,15 @@ package cache
  */
 
 import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"net/http"
 	"testing"
 
 	"github.com/apache/trafficcontrol/lib/go-tc"
 	"github.com/apache/trafficcontrol/lib/go-util"
+	"github.com/apache/trafficcontrol/traffic_monitor/poller"
 	"github.com/apache/trafficcontrol/traffic_monitor/todata"
 )
 
@@ -95,3 +100,37 @@ func TestComputeStatGbps(t *testing.T) {
 		}
 	}
 }
+
+func TestParseAndDecode(t *testing.T) {
+	file, err := ioutil.ReadFile("stats_over_http.json")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	pl := &poller.HTTPPollCtx{HTTPHeader: http.Header{}}
+	ctx := interface{}(pl)
+	ctx.(*poller.HTTPPollCtx).HTTPHeader.Set("Content-Type", "text/json")
+
+	decoder, err := GetDecoder("stats_over_http")
+	if err != nil {
+		t.Errorf("decoder error, expected: nil, got: %v", err)
+	}
+
+	_, miscStats, err := decoder.Parse("1", bytes.NewReader(file), ctx)
+	if err != nil {
+		t.Errorf("decoder parse error, expected: nil, got: %v", err)
+	}
+
+	if len(miscStats) < 1 {
+		t.Errorf("empty miscStats structure")
+	}
+
+	if val, ok := miscStats["plugin.system_stats.timestamp_ms"]; ok {
+		valString := fmt.Sprintf("%s", val)
+		if valString != "1684784877939" {
+			t.Errorf("unable to read `plugin.system_stats.timestamp_ms`")
+		}
+	} else {
+		t.Errorf("plugin.system_stats.timestamp_ms field was not found in the json file")
+	}
+}