diff --git a/components/PreviewEventDashboardItem.js b/components/PreviewEventDashboardItem.js
index 37b0845..237d72d 100644
--- a/components/PreviewEventDashboardItem.js
+++ b/components/PreviewEventDashboardItem.js
@@ -26,12 +26,12 @@ function PreviewEventDashboardItem(props) {
                 {hasImage ?
                     <Card.Title
                         title={props.event['title']}
-                        subtitle={PlanningEventManager.getFormattedEventTime(props.event)}
+                        subtitle={PlanningEventManager.getFormattedEventTime(props.event['date_begin'], props.event['date_end'])}
                         left={getImage}
                     /> :
                     <Card.Title
                         title={props.event['title']}
-                        subtitle={PlanningEventManager.getFormattedEventTime(props.event)}
+                        subtitle={PlanningEventManager.getFormattedEventTime(props.event['date_begin'], props.event['date_end'])}
                     />}
                 {!isEmpty ?
                     <Card.Content style={{
diff --git a/screens/HomeScreen.js b/screens/HomeScreen.js
index 538584d..506ab48 100644
--- a/screens/HomeScreen.js
+++ b/screens/HomeScreen.js
@@ -10,6 +10,7 @@ import {Text, withTheme} from 'react-native-paper';
 import FeedItem from "../components/FeedItem";
 import SquareDashboardItem from "../components/SquareDashboardItem";
 import PreviewEventDashboardItem from "../components/PreviewEventDashboardItem";
+import PlanningEventManager from "../utils/PlanningEventManager";
 // import DATA from "../dashboard_data.json";
 
 
@@ -152,23 +153,6 @@ class HomeScreen extends React.Component<Props> {
             return this.getDashboardMiddleItem(content);
     }
 
-    /**
-     * Convert the date string given by in the event list json to a date object
-     * @param dateString
-     * @return {Date}
-     */
-    stringToDate(dateString: ?string): ?Date {
-        let date = new Date();
-        if (dateString === undefined || dateString === null)
-            date = undefined;
-        else if (dateString.split(' ').length > 1) {
-            let timeStr = dateString.split(' ')[1];
-            date.setHours(parseInt(timeStr.split(':')[0]), parseInt(timeStr.split(':')[1]), 0);
-        } else
-            date = undefined;
-        return date;
-    }
-
     /**
      * Get the time limit depending on the current day:
      * 17:30 for every day of the week except for thursday 11:30
@@ -191,8 +175,8 @@ class HomeScreen extends React.Component<Props> {
      * @return {number} The number of milliseconds
      */
     getEventDuration(event: Object): number {
-        let start = this.stringToDate(event['date_begin']);
-        let end = this.stringToDate(event['date_end']);
+        let start = PlanningEventManager.stringToDate(event['date_begin']);
+        let end = PlanningEventManager.stringToDate(event['date_end']);
         let duration = 0;
         if (start !== undefined && start !== null && end !== undefined && end !== null)
             duration = end - start;
@@ -209,7 +193,7 @@ class HomeScreen extends React.Component<Props> {
     getEventsAfterLimit(events: Object, limit: Date): Array<Object> {
         let validEvents = [];
         for (let event of events) {
-            let startDate = this.stringToDate(event['date_begin']);
+            let startDate = PlanningEventManager.stringToDate(event['date_begin']);
             if (startDate !== undefined && startDate !== null && startDate >= limit) {
                 validEvents.push(event);
             }
@@ -244,8 +228,8 @@ class HomeScreen extends React.Component<Props> {
         let validEvents = [];
         let now = new Date();
         for (let event of events) {
-            let startDate = this.stringToDate(event['date_begin']);
-            let endDate = this.stringToDate(event['date_end']);
+            let startDate = PlanningEventManager.stringToDate(event['date_begin']);
+            let endDate = PlanningEventManager.stringToDate(event['date_end']);
             if (startDate !== undefined && startDate !== null) {
                 if (startDate > now)
                     validEvents.push(event);
diff --git a/utils/PlanningEventManager.js b/utils/PlanningEventManager.js
index 52d53e2..ffcdcb7 100644
--- a/utils/PlanningEventManager.js
+++ b/utils/PlanningEventManager.js
@@ -1,5 +1,8 @@
-
 export default class PlanningEventManager {
+
+    // Regex used to check date string validity
+    static dateRegExp = /^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}$/;
+
     static isEventBefore(event1: Object, event2: Object) {
         let date1 = new Date();
         let date2 = new Date();
@@ -41,39 +44,104 @@ export default class PlanningEventManager {
     }
 
     /**
-     * Convert the date string given by in the event list json to a date object
-     * @param dateString
-     * @return {Date}
+     * Checks if the given date string is in the format
+     * YYYY-MM-DD HH:MM:SS
+     *
+     * @param dateString The string to check
+     * @return {boolean}
      */
-    static stringToDate(dateString: ?string): ?Date {
+    static isDateStringFormatValid(dateString: ?string) {
+        return dateString !== undefined
+            && dateString !== null
+            && PlanningEventManager.dateRegExp.test(dateString);
+    }
+
+    /**
+     * Converts the given date string to a date object.<br>
+     * Accepted format: YYYY-MM-DD HH:MM:SS
+     *
+     * @param dateString The string to convert
+     * @return {Date} The date object or undefined if the given string is invalid
+     */
+    static stringToDate(dateString: ?string): Date | undefined {
         let date = new Date();
-        if (dateString === undefined || dateString === null)
-            date = undefined;
-        else if (dateString.split(' ').length > 1) {
-            let timeStr = dateString.split(' ')[1];
-            date.setHours(parseInt(timeStr.split(':')[0]), parseInt(timeStr.split(':')[1]), 0);
+        if (PlanningEventManager.isDateStringFormatValid(dateString)) {
+            let stringArray = dateString.split(' ');
+            let dateArray = stringArray[0].split('-');
+            let timeArray = stringArray[1].split(':');
+            date.setFullYear(
+                parseInt(dateArray[0]),
+                parseInt(dateArray[1]) - 1, // Month range from 0 to 11
+                parseInt(dateArray[2])
+            );
+            date.setHours(
+                parseInt(timeArray[0]),
+                parseInt(timeArray[1]),
+                parseInt(timeArray[2]),
+                0,
+            );
         } else
             date = undefined;
+
         return date;
     }
 
-    static padStr(i: number) {
-        return (i < 10) ? "0" + i : "" + i;
+    /**
+     * Returns a padded string for the given number if it is lower than 10
+     *
+     * @param i The string to be converted
+     * @return {string}
+     */
+    static toPaddedString(i: number): string {
+        return (i < 10 && i >= 0) ? "0" + i.toString(10) : i.toString(10);
     }
 
-    static getFormattedEventTime(event: Object): string {
-        let formattedStr = '';
-        let startDate = PlanningEventManager.stringToDate(event['date_begin']);
-        let endDate = PlanningEventManager.stringToDate(event['date_end']);
-        if (startDate !== undefined && startDate !== null && endDate !== undefined && endDate !== null)
-            formattedStr = PlanningEventManager.padStr(startDate.getHours()) + ':' + PlanningEventManager.padStr(startDate.getMinutes()) +
-                ' - ' + PlanningEventManager.padStr(endDate.getHours()) + ':' + PlanningEventManager.padStr(endDate.getMinutes());
-        else if (startDate !== undefined && startDate !== null)
-            formattedStr = PlanningEventManager.padStr(startDate.getHours()) + ':' + PlanningEventManager.padStr(startDate.getMinutes());
+    /**
+     * Returns a string corresponding to the event start and end times in the following format:
+     *
+     * HH:MM - HH:MM
+     *
+     * If the end date is not specified or is equal to start time, only start time will be shown.
+     *
+     * If the end date is not on the same day, 00:00 will be shown as end time
+     *
+     * @param start Start time in YYYY-MM-DD HH:MM:SS format
+     * @param end End time in YYYY-MM-DD HH:MM:SS format
+     * @return {string} Formatted string or "/ - /" on error
+     */
+    static getFormattedEventTime(start: ?string, end: ?string): string {
+        let formattedStr = '/ - /';
+        let startDate = PlanningEventManager.stringToDate(start);
+        let endDate = PlanningEventManager.stringToDate(end);
+
+        if (startDate !== undefined && endDate !== undefined && startDate.getTime() !== endDate.getTime()) {
+            formattedStr = PlanningEventManager.toPaddedString(startDate.getHours()) + ':'
+                + PlanningEventManager.toPaddedString(startDate.getMinutes()) + ' - ';
+            if (endDate.getFullYear() > startDate.getFullYear()
+                || endDate.getMonth() > startDate.getMonth()
+                || endDate.getDate() > startDate.getDate())
+                formattedStr += '00:00';
+            else
+                formattedStr += PlanningEventManager.toPaddedString(endDate.getHours()) + ':'
+                    + PlanningEventManager.toPaddedString(endDate.getMinutes());
+        } else if (startDate !== undefined)
+            formattedStr =
+                PlanningEventManager.toPaddedString(startDate.getHours()) + ':'
+                + PlanningEventManager.toPaddedString(startDate.getMinutes());
+
         return formattedStr
     }
 
-    static isDescriptionEmpty (description: ?string) {
+    /**
+     * Checks if the given description can be considered empty.
+     * <br>
+     * An empty description is composed only of whitespace, <b>br</b> or <b>p</b> tags
+     *
+     *
+     * @param description The text to check
+     * @return {boolean}
+     */
+    static isDescriptionEmpty(description: ?string): boolean {
         if (description !== undefined && description !== null) {
             return description
                 .split('<p>').join('') // Equivalent to a replace all
diff --git a/utils/__test__/PlanningEventManager.test.js b/utils/__test__/PlanningEventManager.test.js
index 6c30d50..62cb6f2 100644
--- a/utils/__test__/PlanningEventManager.test.js
+++ b/utils/__test__/PlanningEventManager.test.js
@@ -16,4 +16,68 @@ test('isDescriptionEmpty', () => {
     expect(PlanningEventManager.isDescriptionEmpty("<p>coucou</p>")).toBeFalse();
 });
 
+test('toPaddedString', () => {
+    expect(PlanningEventManager.toPaddedString(-1)).toBe("-1");
+    expect(PlanningEventManager.toPaddedString(0)).toBe("00");
+    expect(PlanningEventManager.toPaddedString(1)).toBe("01");
+    expect(PlanningEventManager.toPaddedString(2)).toBe("02");
+    expect(PlanningEventManager.toPaddedString(10)).toBe("10");
+    expect(PlanningEventManager.toPaddedString(53)).toBe("53");
+    expect(PlanningEventManager.toPaddedString(100)).toBe("100");
+});
+
+test('isDateStringFormatValid', () => {
+    expect(PlanningEventManager.isDateStringFormatValid("2020-03-21 09:00:00")).toBeTrue();
+    expect(PlanningEventManager.isDateStringFormatValid("3214-64-12 01:16:65")).toBeTrue();
+
+    expect(PlanningEventManager.isDateStringFormatValid("3214-64-12 1:16:65")).toBeFalse();
+    expect(PlanningEventManager.isDateStringFormatValid("3214-f4-12 01:16:65")).toBeFalse();
+    expect(PlanningEventManager.isDateStringFormatValid("sqdd 09:00:00")).toBeFalse();
+    expect(PlanningEventManager.isDateStringFormatValid("2020-03-21")).toBeFalse();
+    expect(PlanningEventManager.isDateStringFormatValid("2020-03-21 truc")).toBeFalse();
+    expect(PlanningEventManager.isDateStringFormatValid("3214-64-12 1:16:65")).toBeFalse();
+    expect(PlanningEventManager.isDateStringFormatValid("garbage")).toBeFalse();
+    expect(PlanningEventManager.isDateStringFormatValid("")).toBeFalse();
+    expect(PlanningEventManager.isDateStringFormatValid(undefined)).toBeFalse();
+    expect(PlanningEventManager.isDateStringFormatValid(null)).toBeFalse();
+});
+
+test('stringToDate', () => {
+    let testDate = new Date();
+    expect(PlanningEventManager.stringToDate(undefined)).toBeUndefined();
+    expect(PlanningEventManager.stringToDate("")).toBeUndefined();
+    expect(PlanningEventManager.stringToDate("garbage")).toBeUndefined();
+    expect(PlanningEventManager.stringToDate("2020-03-21")).toBeUndefined();
+    expect(PlanningEventManager.stringToDate("09:00:00")).toBeUndefined();
+    expect(PlanningEventManager.stringToDate("2020-03-21 09:g0:00")).toBeUndefined();
+    expect(PlanningEventManager.stringToDate("2020-03-21 09:g0:")).toBeUndefined();
+    testDate.setFullYear(2020, 2, 21);
+    testDate.setHours(9, 0, 0, 0);
+    expect(PlanningEventManager.stringToDate("2020-03-21 09:00:00")).toEqual(testDate);
+    testDate.setFullYear(2020, 0, 31);
+    testDate.setHours(18, 30, 50, 0);
+    expect(PlanningEventManager.stringToDate("2020-01-31 18:30:50")).toEqual(testDate);
+    testDate.setFullYear(2020, 50, 50);
+    testDate.setHours(65, 65, 65, 0);
+    expect(PlanningEventManager.stringToDate("2020-51-50 65:65:65")).toEqual(testDate);
+});
+
+test('getFormattedEventTime', () => {
+    expect(PlanningEventManager.getFormattedEventTime(null, null))
+        .toBe('/ - /');
+    expect(PlanningEventManager.getFormattedEventTime(undefined, undefined))
+        .toBe('/ - /');
+    expect(PlanningEventManager.getFormattedEventTime("20:30:00", "23:00:00"))
+        .toBe('/ - /');
+    expect(PlanningEventManager.getFormattedEventTime("2020-03-30", "2020-03-31"))
+        .toBe('/ - /');
+
+
+    expect(PlanningEventManager.getFormattedEventTime("2020-03-21 09:00:00", "2020-03-21 09:00:00"))
+        .toBe('09:00');
+    expect(PlanningEventManager.getFormattedEventTime("2020-03-21 09:00:00", "2020-03-22 17:00:00"))
+        .toBe('09:00 - 00:00');
+    expect(PlanningEventManager.getFormattedEventTime("2020-03-30 20:30:00", "2020-03-30 23:00:00"))
+        .toBe('20:30 - 23:00');
+});