diff --git a/SAS/TMSS/frontend/tmss_webapp/package.json b/SAS/TMSS/frontend/tmss_webapp/package.json
index e9cc1d244a28ffcb034292897693fb7875c7a0f9..5de0cf8841f3e116bcd8cf264c26613650b2467f 100644
--- a/SAS/TMSS/frontend/tmss_webapp/package.json
+++ b/SAS/TMSS/frontend/tmss_webapp/package.json
@@ -38,6 +38,7 @@
     "react-bootstrap-datetimepicker": "0.0.22",
     "react-calendar-timeline": "^0.27.0",
     "react-dom": "^16.13.1",
+    "react-flatpickr": "^3.10.7",
     "react-frame-component": "^4.1.2",
     "react-json-to-table": "^0.1.7",
     "react-json-view": "^1.19.1",
diff --git a/SAS/TMSS/frontend/tmss_webapp/src/components/Spreadsheet/CustomDateComp.js b/SAS/TMSS/frontend/tmss_webapp/src/components/Spreadsheet/CustomDateComp.js
index 98d84429009f475b44411113fe6d7d6d319dcf88..50623578335782048c11ba4ff25bb4f182370119 100644
--- a/SAS/TMSS/frontend/tmss_webapp/src/components/Spreadsheet/CustomDateComp.js
+++ b/SAS/TMSS/frontend/tmss_webapp/src/components/Spreadsheet/CustomDateComp.js
@@ -1,7 +1,11 @@
 import React, { Component } from 'react';
+import Flatpickr from "react-flatpickr";
 import {Calendar} from 'primereact/calendar';
 import moment from 'moment';
 import UIConstants from '../../utils/ui.constants';
+import UtilService from '../../services/util.service';
+
+import "flatpickr/dist/flatpickr.css";
 
 //const DATE_TIME_FORMAT = 'YYYY-MM-DD HH:mm:ss';
 
@@ -16,9 +20,13 @@ export default class CustomDateComp extends Component {
   componentDidMount(){
     let parentRows = this.props.agGridReact.props.rowData[this.props.node.rowIndex];
     let parentCellData = parentRows[this.props.colDef.field];
-    this.setState({
-      date:parentCellData
-    })
+    UtilService.getUTC()
+    .then(systemTime => {
+      this.setState({
+        date:parentCellData,
+        systemTime: moment.utc(systemTime)
+      })
+    });
   }
 
   isPopup() {
@@ -33,30 +41,30 @@ export default class CustomDateComp extends Component {
   }
 
   render() {
-    return (
-         <Calendar
-              d dateFormat = {UIConstants.CALENDAR_DATE_FORMAT}
-              value= {this.state.date}
-              onChange= {e => {this.updateDateChanges(e)}}
-             // onBlur= {e => {this.updateDateChanges(e)}}
-             //data-testid="start"
-              todayButtonClassName="today-calendar-btn"
-              showButtonBar
-              showTime= {true}
-              showSeconds= {true}
-              hourFormat= "24"
-              showIcon= {false} inline
-          />
-        );
+    return this.state.systemTime?(
+        <Flatpickr
+            data-enable-time 
+            options={{
+                    "inline": true,
+                    "enableSeconds": true,
+                    "time_24hr": true,
+                    "defaultDate": this.state.systemTime?this.state.systemTime.format(UIConstants.CALENDAR_DEFAULTDATE_FORMAT):"",
+                    "defaultHour": this.state.systemTime?this.state.systemTime.hours():12,
+                    "defaultMinute": this.state.systemTime?this.state.systemTime.minutes():0
+                    }}
+            value={this.state.date}
+            onChange= {value => {this.updateDateChanges(value[0]?value[0]:this.state.date)}}
+        />
+    ):"";
   }
 
 
   updateDateChanges(e){  
-    this.setState({date : e.value || ''});  
+    this.setState({date : e || ''});  
   }
 
   ondatechange(e){
-    this.setState({date : e.value}); 
+    this.setState({date : e}); 
   }
    
   getDate() {
diff --git a/SAS/TMSS/frontend/tmss_webapp/src/routes/Scheduling/Scheduling.Constraints.js b/SAS/TMSS/frontend/tmss_webapp/src/routes/Scheduling/Scheduling.Constraints.js
index 35725047eaeceb182457875029cbba90b4cd7320..396b74fd9c413e4ca93798b76ba3462889ac7dd0 100644
--- a/SAS/TMSS/frontend/tmss_webapp/src/routes/Scheduling/Scheduling.Constraints.js
+++ b/SAS/TMSS/frontend/tmss_webapp/src/routes/Scheduling/Scheduling.Constraints.js
@@ -4,6 +4,7 @@ import _ from 'lodash';
 import Jeditor from '../../components/JSONEditor/JEditor'; 
 import UnitConversion from '../../utils/unit.converter';
 import UIConstants from '../../utils/ui.constants';
+import UtilService from '../../services/util.service';
 /* eslint-disable react-hooks/exhaustive-deps */
 
 export default (props) => {
@@ -11,6 +12,7 @@ export default (props) => {
     const { parentFunction = (editorFn) => { editorFunction = editorFn;} } = props;
     const [constraintSchema, setConstraintSchema] = useState();
     const [initialValue, setInitialValue] = useState();
+    const [systemTime, setSystemTime] = useState();
     //SU Constraint Editor Property Order,format and validation
     const configureProperties = (properties) => {
         for (const propertyKey in properties) {
@@ -69,7 +71,8 @@ export default (props) => {
         }
     };
     //DateTime flatPicker component enabled with seconds
-    const setDateTimeOption = (propertyValue) => {
+    const setDateTimeOption = async(propertyValue) => {
+        const systemTime = moment.utc((await UtilService.getUTC()));
         propertyValue.format = 'datetime-local';
         propertyValue.validationType = 'dateTime';
         propertyValue.skipFormat = true;
@@ -83,6 +86,9 @@ export default (props) => {
                 "enableSeconds": true,
                 "time_24hr": true,
                 "allowInput": true,
+                "defaultDate": systemTime.format(UIConstants.CALENDAR_DEFAULTDATE_FORMAT),
+                "defaultHour": systemTime.hour(),
+                "defaultMinute": systemTime.minutes()
            }          
         };
     };
@@ -101,7 +107,7 @@ export default (props) => {
             } else if(definitionName === 'timewindow') {
                 for (let property in schema.definitions.timewindow.properties) {
                     if(property === 'to' || property === 'from'){
-                        setDateTimeOption(schema.definitions.timewindow.properties[property]);
+                        // setDateTimeOption(schema.definitions.timewindow.properties[property]);
                         if (property === 'from') {
                             schema.definitions.timewindow.properties[property].propertyOrder = 1;
                         } else {
@@ -148,7 +154,9 @@ export default (props) => {
         }
     }
 
-    const constraintStrategy = () => {
+    const constraintStrategy = async() => {
+        const currentSystemTime = moment.utc(await UtilService.getUTC())
+        setSystemTime(currentSystemTime);
         // const constraintTemplate = { ...props.constraintTemplate }
         const constraintTemplate = _.cloneDeep(props.constraintTemplate);
         if (constraintTemplate.schema) {
@@ -196,6 +204,9 @@ export default (props) => {
         if (!props.constraintTemplate) {
             return;
         }
+        UtilService.getUTC().then(utcTime => {
+            setSystemTime(moment.utc(utcTime));
+        });
         if (props.initValue) {
             modifyInitiValue();
         }
diff --git a/SAS/TMSS/frontend/tmss_webapp/src/routes/Timeline/reservation.create.js b/SAS/TMSS/frontend/tmss_webapp/src/routes/Timeline/reservation.create.js
index 4809304616b85fe9a91f3828a8a16f5b29f64dda..f46cc5ea034024c5a1ed7314c04f495df09b9bfd 100644
--- a/SAS/TMSS/frontend/tmss_webapp/src/routes/Timeline/reservation.create.js
+++ b/SAS/TMSS/frontend/tmss_webapp/src/routes/Timeline/reservation.create.js
@@ -6,6 +6,7 @@ import { Growl } from 'primereact/components/growl/Growl';
 import AppLoader from '../../layout/components/AppLoader';
 import PageHeader from '../../layout/components/PageHeader';
 import UIConstants from '../../utils/ui.constants';
+import Flatpickr from "react-flatpickr";
 import { Calendar } from 'primereact/calendar';
 import { InputMask } from 'primereact/inputmask';
 import { Dropdown } from 'primereact/dropdown';
@@ -18,6 +19,9 @@ import ProjectService from '../../services/project.service';
 import ReservationService from '../../services/reservation.service';
 import UnitService from '../../utils/unit.converter';
 import Jeditor from '../../components/JSONEditor/JEditor';
+import UtilService from '../../services/util.service';
+
+import "flatpickr/dist/flatpickr.css";
 
 /**
  * Component to create a new Reservation
@@ -38,7 +42,7 @@ export class ReservationCreate extends Component {
             reservation: { 
                 name: '',
                 description: '', 
-                start_time: '',
+                start_time: null,
                 duration: '',
                 project: (props.match?props.match.params.project:null) || null,
             },
@@ -78,9 +82,11 @@ export class ReservationCreate extends Component {
     async initReservation() {
         const promises = [  ProjectService.getProjectList(),
                             ReservationService.getReservationTemplates(),
+                            UtilService.getUTC()
                         ];
         let emptyProjects = [{url: null, name: "Select Project"}];
        Promise.all(promises).then(responses => {
+            let systemTime = moment.utc(responses[2]);
             this.projects = emptyProjects.concat(responses[0]);
             this.reservationTemplates = responses[1];
 
@@ -95,8 +101,9 @@ export class ReservationCreate extends Component {
                 paramsSchema: schema,
                 isLoading: false,
                 reservationTemplate: reservationTemplate,
+                systemTime: systemTime
             });
-            });    
+        });    
         
     }
     
@@ -209,7 +216,6 @@ export class ReservationCreate extends Component {
                 }
             }
         }
-        
         this.setState({errors: errors, validFields: validFields});
         if (Object.keys(validFields).length === Object.keys(this.formRules).length) {
             validForm = true;
@@ -356,20 +362,27 @@ export class ReservationCreate extends Component {
                             <div className="p-field p-grid">
                                     <label htmlFor="reservationName" className="col-lg-2 col-md-2 col-sm-12">From Date <span style={{color:'red'}}>*</span></label>
                                     <div className="col-lg-3 col-md-3 col-sm-12">
-                                        <Calendar 
-                                            d dateFormat="yy-mm-dd"
-                                            value= {this.state.reservation.start_time}
-                                            onChange= {e => this.setParams('start_time',e.value)}
-                                            data-testid="start_time"
-                                            tooltip="Moment at which the reservation starts from, that is, when its reservation can run." tooltipOptions={this.tooltipOptions}
-                                            showIcon={true}
-                                            showTime= {true}
-                                            showSeconds= {true}
-                                            hourFormat= "24"
+                                        <Flatpickr
+                                            data-enable-time className={`p-inputtext p-component ${this.state.errors.start_time && this.state.touched.start_time?'input-error':''}`}
+                                            placeholder="YYYY-MM-DD HH:mm:ss"
+                                            options={{
+                                                    "inlineHideInput": true,
+                                                    // "wrap": true,
+                                                    "enableSeconds": true,
+                                                    "time_24hr": true,
+                                                    "allowInput": true,
+                                                    "defaultDate": this.state.systemTime.format(UIConstants.CALENDAR_DEFAULTDATE_FORMAT),
+                                                    "defaultHour": this.state.systemTime.hours(),
+                                                    "defaultMinute": this.state.systemTime.minutes()
+                                                    }}
+                                            tooltip="Moment at which the reservation starts from, that is, when its reservation can run."
+                                            value={this.state.reservation.start_time}
+                                            onChange= {value => this.setParams('start_time', value[0]?value[0]:this.state.reservation.start_time)}
+                                            onBlur= {(e) => {this.setReservationParams('start_time', e.target.value?moment(e.target.value).toDate():this.state.reservation.start_time)}}
                                         />
-                                    
-                                        <label className={this.state.errors.from?"error":"info"}>
-                                            {this.state.errors.start_time ? this.state.errors.start_time : ""}
+                                        <i className="fa fa-calendar" style={{position: "absolute", marginLeft: '-25px', marginTop:'5px'}}></i>
+                                        <label className={this.state.errors.start_time && this.state.touched.start_time?"error":"info"}>
+                                            {this.state.errors.start_time && this.state.touched.start_time ? this.state.errors.start_time : ""}
                                         </label>
                                     </div>
                                     <div className="col-lg-1 col-md-1 col-sm-12"></div>
diff --git a/SAS/TMSS/frontend/tmss_webapp/src/routes/Timeline/view.js b/SAS/TMSS/frontend/tmss_webapp/src/routes/Timeline/view.js
index 828386d19450af0473e199ad44430a7b4491e8ed..56437953e4ee0ed1bd91c69fda2fd9512bb7f703 100644
--- a/SAS/TMSS/frontend/tmss_webapp/src/routes/Timeline/view.js
+++ b/SAS/TMSS/frontend/tmss_webapp/src/routes/Timeline/view.js
@@ -845,9 +845,9 @@ export class TimelineView extends Component {
         if (this.state.redirect) {
             return <Redirect to={ {pathname: this.state.redirect} }></Redirect>
         }
-         if (this.state.loader) {
-            return <AppLoader />
-        }
+        //  if (this.state.loader) {
+        //     return <AppLoader />
+        // }
         const isSUDetsVisible = this.state.isSUDetsVisible;
         const isTaskDetsVisible = this.state.isTaskDetsVisible;
         const canExtendSUList = this.state.canExtendSUList;