diff --git a/NEWS b/NEWS
index f1e4392b1..d4d16ce52 100644
--- a/NEWS
+++ b/NEWS
@@ -7,6 +7,7 @@ Bug fixes
  - [web] properly encode rawsource of events and tasks to avoid XSS issues (#3718)
  - [web] properly encode rawsource of cards to avoid XSS issues
  - [web] fixed all-day events covering a timezone change (#3457)
+ - [web] sgTimePicker parser now respects the user's time format and language
  - [core] properly handle sorted/deleted calendars (#3723)
  - [core] properly handle flattened timezone definitions (#2690)
 
diff --git a/UI/WebServerResources/js/Common/sgTimepicker.directive.js b/UI/WebServerResources/js/Common/sgTimepicker.directive.js
index 12ddabc8d..534da5ef3 100644
--- a/UI/WebServerResources/js/Common/sgTimepicker.directive.js
+++ b/UI/WebServerResources/js/Common/sgTimepicker.directive.js
@@ -711,38 +711,22 @@
    */
   TimePickerCtrl.prototype.handleInputEvent = function(self) {
     var inputString = this.inputElement.value;
-    var arr = inputString.split(/[\.:]/);
+    var parsedTime = inputString ? this.dateLocale.parseTime(inputString) : null;
 
-    if (inputString === '') {
-      this.ngModelCtrl.$setViewValue(null);
-      this.time = null;
-      this.inputContainer.classList.remove(INVALID_CLASS);
-    }
-    else if (arr.length < 2) {
-      arr = /(\d{1,2})(\d{2})/i.exec(inputString);
-      if (arr)
-        arr.splice(0, 1); // only keep text captured by parenthesis
+    // An input string is valid if it is either empty (representing no date)
+    // or if it parses to a valid time that the user is allowed to select.
+    var isValidInput = inputString === '' || this.dateUtil.isValidDate(parsedTime);
+
+    // The datepicker's model is only updated when there is a valid input.
+    if (isValidInput) {
+      var updated = new Date(this.time);
+      updated.setHours(parsedTime.getHours());
+      updated.setMinutes(parsedTime.getMinutes());
+      this.ngModelCtrl.$setViewValue(updated);
+      this.time = updated;
     }
 
-    if (!arr || arr.length < 2) {
-      this.inputContainer.classList.toggle(INVALID_CLASS, inputString);
-    }
-    else {
-      var h = Number(arr[0]);
-      var m = Number(arr[1]);
-      var newVal = new Date(this.time);
-      if (h && h >= 0 && h <= 23 && m && m >= 0 && m <= 59 && angular.isDate(newVal)) {
-        newVal.setHours(h);
-        newVal.setMinutes(m);
-        this.ngModelCtrl.$setViewValue(newVal);
-        this.time = newVal;
-        this.inputElement.value = this.dateLocale.formatTime(newVal);
-        this.inputContainer.classList.remove(INVALID_CLASS);
-      }
-      else {
-        this.inputContainer.classList.toggle(INVALID_CLASS, inputString);
-      }
-    }
+    this.updateErrorState(parsedTime);
   };
 
   /** Position and attach the floating calendar to the document. */
diff --git a/UI/WebServerResources/js/Common/utils.js b/UI/WebServerResources/js/Common/utils.js
index d69630847..839565b1c 100644
--- a/UI/WebServerResources/js/Common/utils.js
+++ b/UI/WebServerResources/js/Common/utils.js
@@ -152,12 +152,14 @@ String.prototype.parseDate = function(localeProvider, format) {
   var string, formattingTokens, tokens, token, now, date, regexes, i, parsedInput, matchesCount;
 
   string = '' + this;
-  formattingTokens = /%[dembByY]/g;
+  formattingTokens = /%[dembByYHIMp]/g;
   now = new Date();
   date = {
-    year: -1,
-    month: -1,
-    day: -1
+    year: now.getYear() + 1900,
+    month: now.getMonth(),
+    day: now.getDate(),
+    hour: 0,
+    minute: 0
   };
   regexes = {
     '%d': [/\d\d/, function(input) {
@@ -173,13 +175,13 @@ String.prototype.parseDate = function(localeProvider, format) {
       return (date.month < 12);
     }],
     '%b': [/[^\d\s\.\/\-]{2,}/, function(input) {
-      var i = _.indexOf(localeProvider.shortMonths, input);
+      var i = _.indexOf(_.map(localeProvider.shortMonths, _.toLower), _.toLower(input));
       if (i >= 0)
         date.month = i;
       return (i >= 0);
     }],
     '%B': [/[^\d\s\.\/\-]{2,}/, function(input) {
-      var i = _.indexOf(localeProvider.months, input);
+      var i = _.indexOf(_.map(localeProvider.months, _.toLower), _.toLower(input));
       if (i >= 0)
         date.month = i;
       return (i >= 0);
@@ -194,7 +196,25 @@ String.prototype.parseDate = function(localeProvider, format) {
     '%Y': [/[12]\d\d\d/, function(input) {
       date.year = parseInt(input);
       return true;
-    }]
+    }],
+    '%H': [/\d{1,2}/, function(input) {
+      date.hour = parseInt(input);
+      return (date.hour < 24);
+    }],
+    '%I': [/\d{1,2}/, function(input) {
+      date.hour = parseInt(input);
+      return (date.hour <= 12);
+    }],
+    '%M': [/[0-5]\d/, function(input) {
+      date.minute = parseInt(input);
+      return (date.minute < 60 );
+    }],
+    '%p': [/[^\d\s\/\-]+/, function(input) {
+      var linput = _.toLower(input), am = _.toLower(l('AM')), pm = _.toLower(l('PM'));
+      if (linput == pm)
+        date.hour += 12;
+      return (linput == am || linput == pm);
+    }],
   };
   tokens = format.match(formattingTokens) || [];
   matchesCount = 0;
@@ -211,7 +231,7 @@ String.prototype.parseDate = function(localeProvider, format) {
 
   if (tokens.length === matchesCount) {
     // console.debug(this + ' + ' + format + ' = ' + JSON.stringify(date));
-    return new Date(date.year, date.month, date.day);
+    return new Date(date.year, date.month, date.day, date.hour, date.minute);
   }
   else
     return new Date(NaN);
diff --git a/UI/WebServerResources/js/Preferences/Preferences.service.js b/UI/WebServerResources/js/Preferences/Preferences.service.js
index b0e6f46e0..005ba2bf1 100644
--- a/UI/WebServerResources/js/Preferences/Preferences.service.js
+++ b/UI/WebServerResources/js/Preferences/Preferences.service.js
@@ -92,6 +92,9 @@
       _this.$mdDateLocaleProvider.formatDate = function(date) {
         return date? date.format(_this.$mdDateLocaleProvider, data.SOGoShortDateFormat) : '';
       };
+      _this.$mdDateLocaleProvider.parseTime = function(timeString) {
+        return timeString? timeString.parseDate(_this.$mdDateLocaleProvider, data.SOGoTimeFormat) : new Date(NaN);
+      };
       _this.$mdDateLocaleProvider.formatTime = function(date) {
         return date? date.format(_this.$mdDateLocaleProvider, data.SOGoTimeFormat) : '';
       };