diff --git a/openapi/RelativeEvent.yaml b/openapi/RelativeEvent.yaml
index 2e6833f1..10e910fb 100644
--- a/openapi/RelativeEvent.yaml
+++ b/openapi/RelativeEvent.yaml
@@ -19,6 +19,7 @@ components:
             - MINUTE
             - HOUR
             - DAY
+        
     RelativeDate:
       type: object
       description: A date relative to a specific base date (e.g study start)
@@ -29,6 +30,10 @@ components:
           type: string
           format: time
           description: Follows ISO 8601 format for time
+        timezone:
+          type: string
+          description: Time Zone string for relative event
+
     RelativeRecurrenceRule:
       type: object
       description: A recurrence rule relative to dtstart
diff --git a/src/components/ObservationList.vue b/src/components/ObservationList.vue
index 81f80ed4..f3043dd4 100644
--- a/src/components/ObservationList.vue
+++ b/src/components/ObservationList.vue
@@ -36,7 +36,6 @@ Licensed under the Elastic License 2.0. */
   import { useErrorHandling } from '../composable/useErrorHandling';
   import DeleteMoreTableRowDialog from './dialog/DeleteMoreTableRowDialog.vue';
   import dayjs from 'dayjs';
-  import { ZTimeStringToOffsetTimeString } from '../utils/dateUtils';
 
   const loader = useLoader();
   const { observationsApi } = useObservationsApi();
@@ -314,15 +313,13 @@ Licensed under the Elastic License 2.0. */
               schedule.dtstart.offset?.unit
               ? `${t(
                   `scheduler.preview.unit.${schedule.dtstart.offset.unit}`
-                )} ${
-                  schedule.dtstart.offset.value
-                }, ${ZTimeStringToOffsetTimeString(schedule.dtstart.time)}`
+                )} ${schedule.dtstart.offset.value}, ${schedule.dtstart.time}`
               : undefined;
           case 'dtend':
             return schedule.dtend.offset?.value && schedule.dtend.offset?.unit
               ? `${t(`scheduler.preview.unit.${schedule.dtend.offset.unit}`)} ${
                   schedule.dtend.offset.value
-                }, ${ZTimeStringToOffsetTimeString(schedule.dtend.time)} `
+                }, ${schedule.dtend.time} `
               : undefined;
           default:
             return undefined;
diff --git a/src/components/shared/RelativeScheduler.vue b/src/components/shared/RelativeScheduler.vue
index c3ae2d01..bf6ab58e 100644
--- a/src/components/shared/RelativeScheduler.vue
+++ b/src/components/shared/RelativeScheduler.vue
@@ -5,7 +5,6 @@
   import InputNumber from 'primevue/inputnumber';
   import Dropdown from 'primevue/dropdown';
   import Checkbox from 'primevue/checkbox';
-  import { ZTimeToOffsetTime } from '../../utils/dateUtils';
   import {
     RelativeEvent,
     RelativeRecurrenceRule,
@@ -28,6 +27,7 @@
         unit: schedule.dtstart?.offset?.unit,
       },
       time: schedule.dtstart?.time,
+      timezone: schedule.dtstart?.timezone,
     },
     dtend: {
       offset: {
@@ -35,6 +35,7 @@
         unit: schedule.dtend?.offset?.unit,
       },
       time: schedule.dtend?.time,
+      timezone: schedule.dtend?.timezone,
     },
     rrrule: {
       frequency: {
@@ -56,7 +57,6 @@
       parseInt(schedule.dtstart.time?.substring(0, 2)),
       parseInt(schedule.dtstart.time?.substring(3, 5), 0)
     );
-    startTime.value = ZTimeToOffsetTime(startTime.value);
   } else {
     startTime.value.setHours(10, 30);
   }
@@ -65,14 +65,13 @@
       parseInt(schedule.dtend.time?.substring(0, 2)),
       parseInt(schedule.dtend.time?.substring(3, 5), 0)
     );
-    endTime.value = ZTimeToOffsetTime(endTime.value);
   } else {
     endTime.value.setHours(18, 30);
   }
 
   returnSchedule.value.dtstart.time = returnSchedule.value.dtstart.time
     ? returnSchedule.value.dtstart.time
-    : '10:10';
+    : '10:00';
   returnSchedule.value.dtend.time = returnSchedule.value.dtend.time
     ? returnSchedule.value.dtend.time
     : '18:00';
@@ -250,15 +249,24 @@
 
   function save() {
     returnSchedule.value.dtstart.time = startTime.value
-      ?.toISOString()
-      .substring(11, 16);
+      ?.toTimeString()
+      .substring(0, 5);
     returnSchedule.value.dtend.time = endTime.value
-      ?.toISOString()
-      .substring(11, 16);
+      ?.toTimeString()
+      .substring(0, 5);
 
     returnSchedule.value.dtstart.offset = rDtstartOffset.value;
     returnSchedule.value.dtend.offset = rDtendOffset.value;
 
+    if (typeof returnSchedule.value.dtstart.time !== 'undefined') {
+      returnSchedule.value.dtstart.timezone =
+        Intl.DateTimeFormat().resolvedOptions().timeZone;
+    }
+    if (typeof returnSchedule.value.dtend.time !== 'undefined') {
+      returnSchedule.value.dtend.timezone =
+        Intl.DateTimeFormat().resolvedOptions().timeZone;
+    }
+
     if (repeatChecked.value) {
       const rrrule: RelativeRecurrenceRule = {
         frequency: rFrequency.value,
diff --git a/src/components/subComponents/SchedulerInfoBlock.vue b/src/components/subComponents/SchedulerInfoBlock.vue
index aebca34e..35a1e766 100644
--- a/src/components/subComponents/SchedulerInfoBlock.vue
+++ b/src/components/subComponents/SchedulerInfoBlock.vue
@@ -14,7 +14,6 @@ Licensed under the Elastic License 2.0. */
   import Button from 'primevue/button';
   import { useI18n } from 'vue-i18n';
   import dayjs from 'dayjs';
-  import { ZTimeStringToOffsetTimeString } from '../../utils/dateUtils';
 
   const { t } = useI18n();
 
@@ -79,16 +78,14 @@ Licensed under the Elastic License 2.0. */
               schedule.dtstart.offset?.unit
               ? `${t(
                   `scheduler.preview.unit.${schedule.dtstart.offset.unit}`
-                )} ${
-                  schedule.dtstart.offset.value
-                }, ${ZTimeStringToOffsetTimeString(schedule.dtstart.time)}`
+                )} ${schedule.dtstart.offset.value}, ${schedule.dtstart.time}`
               : undefined;
           }
           case 'dtend':
             return schedule.dtend.offset?.value && schedule.dtend.offset?.unit
               ? `${t(`scheduler.preview.unit.${schedule.dtend.offset.unit}`)} ${
                   schedule.dtend.offset.value
-                }, ${ZTimeStringToOffsetTimeString(schedule.dtend.time)} `
+                }, ${schedule.dtend.time} `
               : undefined;
           default:
             return undefined;