diff --git a/src/shared/actions/challenge-listing/index.js b/src/shared/actions/challenge-listing/index.js
index 1971fead28..a33623e9b7 100644
--- a/src/shared/actions/challenge-listing/index.js
+++ b/src/shared/actions/challenge-listing/index.js
@@ -339,7 +339,7 @@ function getUserChallengesInit(uuid) {
 function getUserChallengesDone(userId, tokenV3) {
   const service = getService(tokenV3);
 
-  return service.getUserResources(userId)
+  return service.getUserResources(userId, 1, 10000)
     .then(item => item)
     .catch((error) => {
       fireErrorMessage('Error Getting User Challenges', error.content || error);
diff --git a/src/shared/components/challenge-detail/Header/DeadlinesPanel/index.jsx b/src/shared/components/challenge-detail/Header/DeadlinesPanel/index.jsx
index fdf53200d5..cd8abc1e5c 100644
--- a/src/shared/components/challenge-detail/Header/DeadlinesPanel/index.jsx
+++ b/src/shared/components/challenge-detail/Header/DeadlinesPanel/index.jsx
@@ -6,14 +6,15 @@ import moment from 'moment-timezone';
 import PT from 'prop-types';
 import React from 'react';
 
+import { phaseEndDate, phaseStartDate } from 'utils/challenge-listing/helper';
 import Card from './Card';
 import './style.scss';
 
 export default function DeadlinesPanel({ deadlines }) {
   /* Calculates challenge start time. */
   let start = deadlines[0] || {};
-  start = start.actualStartDate || start.scheduledStartDate;
-  const started = moment(start).isBefore(moment());
+  start = phaseStartDate(start);
+  const started = moment(start).isBefore();
 
   return (
     <div styleName="panel" tabIndex="0" role="tabpanel">
@@ -29,7 +30,7 @@ export default function DeadlinesPanel({ deadlines }) {
       { deadlines.map((d, index) => (
         <Card
           key={d.name}
-          time={d.scheduledEndDate || d.actualEndDate}
+          time={phaseEndDate(d)}
           title={index === deadlines.length - 1 ? 'Winners' : d.name}
         />
       ))}
diff --git a/src/shared/components/challenge-detail/Header/index.jsx b/src/shared/components/challenge-detail/Header/index.jsx
index 0a6594ea8f..fe2c2d47c7 100644
--- a/src/shared/components/challenge-detail/Header/index.jsx
+++ b/src/shared/components/challenge-detail/Header/index.jsx
@@ -15,6 +15,7 @@ import React from 'react';
 import { DangerButton, PrimaryButton } from 'topcoder-react-ui-kit';
 import { Link } from 'topcoder-react-utils';
 import { COMPETITION_TRACKS } from 'utils/tc';
+import { phaseEndDate } from 'utils/challenge-listing/helper';
 
 import LeftArrow from 'assets/images/arrow-prev.svg';
 
@@ -69,16 +70,17 @@ export default function ChallengeHeader(props) {
     numOfRegistrants,
     numOfCheckpointSubmissions,
     numOfSubmissions,
-    endDate,
     status,
     type,
     track,
   } = challenge;
 
   const tags = challenge.tags || [];
-  const appealsEndDate = endDate;
 
   const allPhases = challenge.phases || [];
+  const sortedAllPhases = _.cloneDeep(allPhases)
+    .sort((a, b) => moment(phaseEndDate(a)).diff(phaseEndDate(b)));
+
   const { prizes } = prizeSets && prizeSets.length ? prizeSets[0] : [];
 
   const checkpointPrizes = _.find(prizeSets, { type: 'checkpoint' });
@@ -122,14 +124,14 @@ export default function ChallengeHeader(props) {
   */
   const hasSubmissions = !_.isEmpty(mySubmissions);
 
-  let nextPhase = allPhases.filter(p => p.isOpen)
-    .sort((a, b) => moment(a.scheduledEndDate).diff(b.scheduledEndDate))[0];
-  if (hasRegistered && allPhases[0] && allPhases[0].name === 'Registration') {
-    nextPhase = allPhases[1] || {};
+  const openPhases = sortedAllPhases.filter(p => p.isOpen);
+  let nextPhase = openPhases[0];
+  if (hasRegistered && openPhases[0] && openPhases[0].name === 'Registration') {
+    nextPhase = openPhases[1] || {};
   }
   const nextDeadline = nextPhase && nextPhase.name;
 
-  const deadlineEnd = moment(nextPhase && nextPhase.scheduledEndDate);
+  const deadlineEnd = moment(nextPhase && phaseEndDate(nextPhase));
   const currentTime = moment();
 
   let timeLeft = deadlineEnd.isAfter(currentTime)
@@ -147,8 +149,8 @@ export default function ChallengeHeader(props) {
   if (showDeadlineDetail) {
     relevantPhases = (allPhases || []).filter((phase) => {
       if (phase.name === 'Iterative Review') {
-        const end = phase.actualEndDate || phase.scheduledEndDate;
-        return moment(end).isAfter(moment());
+        const end = phaseEndDate(phase);
+        return moment(end).isAfter();
       }
       const phaseLowerCase = phase.name.toLowerCase();
       if (phaseLowerCase.includes('screening') || phaseLowerCase.includes('specification')) {
@@ -168,30 +170,34 @@ export default function ChallengeHeader(props) {
       if (b.name.toLowerCase().includes('registration')) {
         return 1;
       }
-      return (new Date(a.scheduledEndDate || a.actualEndDate)).getTime()
-        - (new Date(b.scheduledEndDate || b.actualEndDate)).getTime();
+      const aEndDate = phaseEndDate(a);
+      const bEndDate = phaseEndDate(b);
+      return moment(aEndDate).diff(bEndDate);
     });
     if (type === 'First2Finish' && status === 'Completed') {
       const phases2 = allPhases.filter(p => p.name === 'Iterative Review' && !p.isOpen);
-      const endPhaseDate = Math.max(...phases2.map(d => new Date(d.scheduledEndDate)));
+      const endPhaseDate = Math.max(...phases2.map(d => phaseEndDate(d)));
       relevantPhases = _.filter(relevantPhases, p => (p.name.toLowerCase().includes('registration')
-        || new Date(p.scheduledEndDate).getTime() < endPhaseDate));
+        || phaseEndDate(p).getTime() < endPhaseDate));
       relevantPhases.push({
         id: -1,
         name: 'Winners',
+        isOpen: false,
+        actualEndDate: endPhaseDate,
         scheduledEndDate: endPhaseDate,
       });
     } else if (relevantPhases.length > 1) {
       const lastPhase = relevantPhases[relevantPhases.length - 1];
-      const lastPhaseTime = (
-        new Date(lastPhase.actualEndDate || lastPhase.scheduledEndDate)
-      ).getTime();
+      const lastPhaseTime = phaseEndDate(lastPhase).getTime();
 
-      const appealsEnd = (new Date(appealsEndDate).getTime());
-      if (lastPhaseTime < appealsEnd && lastPhase.name !== 'Review') {
+      const appealsEndDate = phaseEndDate(sortedAllPhases[sortedAllPhases.length - 1]);
+      const appealsEnd = appealsEndDate.getTime();
+      if (lastPhaseTime < appealsEnd) {
         relevantPhases.push({
           id: -1,
           name: 'Winners',
+          isOpen: false,
+          actualEndDate: appealsEndDate,
           scheduledEndDate: appealsEndDate,
         });
       }
@@ -495,7 +501,6 @@ ChallengeHeader.propTypes = {
     numOfCheckpointSubmissions: PT.any,
     numOfSubmissions: PT.any,
     status: PT.any,
-    endDate: PT.any,
     phases: PT.any,
     roundId: PT.any,
     prizeSets: PT.any,
diff --git a/src/shared/utils/challenge-listing/helper.js b/src/shared/utils/challenge-listing/helper.js
index 192dafcc04..765fed8af0 100644
--- a/src/shared/utils/challenge-listing/helper.js
+++ b/src/shared/utils/challenge-listing/helper.js
@@ -9,7 +9,11 @@ export function phaseEndDate(phase) {
   // Case 1: phase is still open. take the `scheduledEndDate`
   // Case 2: phase is not open but `scheduledStartDate` is a future date.
   // This means phase is not yet started. So take the `scheduledEndDate`
-  if (phase.isOpen || moment(phase.scheduledStartDate).isAfter()) {
+  // Case 3: phase is not open & `scheduledStartDate` is a past date,
+  // but the phase is `Iterative Review`. It will take the `scheduledEndDate`
+  // as it's a valid scenario for iterative review,
+  // there might not be any submission yet to open the phase
+  if (phase.isOpen || moment(phase.scheduledStartDate).isAfter() || phase.name === 'Iterative Review') {
     return new Date(phase.scheduledEndDate);
   }
   // for other cases, take the `actualEndDate` as phase is already closed