Realtime should not show if there are no clocks

src/MCT.js

@@ -356,7 +356,7 @@ export class MCT extends EventEmitter {
 
     this.element = domElement;
 
-    if (!this.time.getClock()) {
+    if (this.time.clocks.size !== 0 && !this.time.getClock()) {
       this.time.setClock(this.defaultClock);
     }
 

src/plugins/timeConductor/ConductorComponent.vue

@@ -33,11 +33,11 @@
     <ConductorModeIcon class="c-conductor__mode-icon" />
     <div class="c-compact-tc__setting-value u-fade-truncate">
       <ConductorMode :read-only="true" />
-      <ConductorClock :read-only="true" />
+      <ConductorClock v-if="openmct.time.clocks.size > 0" :read-only="true" />
       <ConductorTimeSystem :read-only="true" />
     </div>
     <ConductorInputsFixed v-if="isFixedTimeMode" :input-bounds="viewBounds" :read-only="true" />
-    <ConductorInputsRealtime v-else :input-bounds="viewBounds" :read-only="true" />
+    <ConductorInputsRealtime v-else-if="openmct.time.clocks.size > 0" :input-bounds="viewBounds" :read-only="true" />
     <ConductorAxis
       v-if="isFixedTimeMode"
       class="c-conductor__ticks"

src/plugins/timeConductor/ConductorPopUp.vue

@@ -12,12 +12,12 @@
         title="Sets the Time Conductor's mode."
       />
       <IndependentClock
-        v-if="isIndependent"
+        v-if="isIndependent && openmct.time.clocks.size > 0"
         class="c-conductor__mode-select"
         title="Sets the Time Conductor's clock."
       />
       <ConductorClock
-        v-else
+        v-else-if="openmct.time.clocks.size > 0"
         class="c-conductor__mode-select"
         title="Sets the Time Conductor's clock."
       />

src/plugins/timeConductor/mode-mixin.js

@@ -3,7 +3,14 @@ import { FIXED_MODE_KEY, REALTIME_MODE_KEY } from '../../api/time/constants.js';
 export default {
   methods: {
     loadModes() {
-      this.modes = [FIXED_MODE_KEY, REALTIME_MODE_KEY].map(this.getModeMetadata);
+      const modes = [FIXED_MODE_KEY];
+      const clockCount = this.openmct.time.clocks.size;
+
+      if (clockCount > 1) {
+        modes.push(REALTIME_MODE_KEY);
+      }
+
+      this.modes = modes.map(this.getModeMetadata);
     },
     getModeMetadata(mode, testIds = false) {
       let modeOptions;

src/plugins/timeConductor/useTimeMode.js

@@ -65,7 +65,14 @@ export function useTimeMode(openmct, timeContext) {
   }
 
   function getAllModeMetadata() {
-    return [FIXED_MODE_KEY, REALTIME_MODE_KEY].map(getModeMetadata);
+    const clockCount = openmct.time.clocks.size;
+    const modes = [FIXED_MODE_KEY];
+
+    if (clockCount > 0) {
+      modes.push(REALTIME_MODE_KEY);
+    }
+
+    return modes.map(getModeMetadata);
   }
 
   function getModeMetadata(key) {

src/plugins/utcTimeSystem/plugin.js

@@ -33,7 +33,7 @@ export default function () {
   return function (openmct) {
     const timeSystem = new UTCTimeSystem();
     openmct.time.addTimeSystem(timeSystem);
-    openmct.time.addClock(new LocalClock(100));
+
     openmct.telemetry.addFormat(new UTCTimeFormat());
     openmct.telemetry.addFormat(new DurationFormat());
   };