diff --git a/ui/calendar.js b/ui/calendar.js
index 40f90fe7b..da8604458 100644
--- a/ui/calendar.js
+++ b/ui/calendar.js
@@ -71,8 +71,7 @@ return $.widget( "ui.calendar", {
 
 		this._setLocale( this.options.locale );
 
-		this.date = new $.ui.calendarDate( this.options.value, this.options.locale );
-		this.date = $.date( this.options.value, this.options.dateFormat );
+		this.date = new $.ui.calendarDate( this.options.value, this._calendarDateOptions );
 		this.viewDate = this.date.clone();
 		this.viewDate.eachDay = this.options.eachDay;
 
@@ -178,23 +177,17 @@ return $.widget( "ui.calendar", {
 	},
 
 	_setLocale: function( locale ) {
-		var globalize;
+		var globalize = new Globalize( locale );
 
-		if ( typeof locale === "string" ) {
-			globalize = new Globalize( locale );
-			locale = {
-				format: function( date ) {
+		this._format = function( date ) {
 					return globalize.formatDate( date, { date: "short" } );
-				},
-				parse: function( stringDate ) {
-					return globalize.parseDate( stringDate, { date: "short" } );
-				}
-			};
-		}
+		};
 
-		if ( !locale.firstDay ) {
-			globalize = globalize || new Globalize( locale._locale );
-			$.extend( locale, {
+		this._parse = function( stringDate ) {
+					return globalize.parseDate( stringDate, { date: "short" } );
+			};
+
+		this._calendarDateOptions = {
 				firstDay: globalize.cldr.supplemental.weekData.firstDay(),
 				formatWeekdayShort: function( date ) {
 
@@ -212,11 +205,9 @@ return $.widget( "ui.calendar", {
 				},
 				formatWeekOfYear: function( date ) {
 					return globalize.formatDate( date, { pattern: "w" } );
-				}
-			});
-		}
-
-		this.options.locale = locale;
+	},
+			parse: this._parse
+		};
 	},
 
 	_createCalendar: function() {
@@ -562,11 +553,10 @@ return $.widget( "ui.calendar", {
 	},
 
 	value: function( value ) {
-		var locale = this.options.locale;
 		if ( arguments.length ) {
 			this.valueAsDate( locale.parse( value ) );
 		} else {
-			return locale.format( this.option( "value" ) );
+			return this._format( this.option( "value" ) );
 		}
 	},
 
@@ -658,7 +648,7 @@ return $.widget( "ui.calendar", {
 
 		if ( key === "locale" ) {
 			this._setLocale( value );
-			this.date.setAttributes( this.options.locale );
+			this.date.setAttributes( this._calendarDateOptions );
 			this.refresh();
 		}
 	}
diff --git a/ui/calendar/date.js b/ui/calendar/date.js
index 80ebdaf7a..dcace34a9 100644
--- a/ui/calendar/date.js
+++ b/ui/calendar/date.js
@@ -38,7 +38,7 @@ var _Date,
 
 _Date = function( date, attributes ) {
 	if ( !( this instanceof _Date ) ) {
-		return new _Date( date, options );
+		return new _Date( date, attributes );
 	}
 
 	this.setAttributes( attributes );
diff --git a/ui/datepicker.js b/ui/datepicker.js
index 8faf67bab..b95d5a4f1 100644
--- a/ui/datepicker.js
+++ b/ui/datepicker.js
@@ -61,10 +61,10 @@ var widget = $.widget( "ui.datepicker", {
 		this._setLocale( this.options.locale );
 
 		if ( $.type( this.options.max ) === "string" ) {
-			this.options.max = this.options.locale.parseYMD( this.options.max );
+			this.options.max = this._parseYMD( this.options.max );
 		}
 		if ( $.type( this.options.min ) === "string" ) {
-			this.options.min = this.options.locale.parseYMD( this.options.min );
+			this.options.min = this._parseYMD( this.options.min );
 		}
 
 		this._createCalendar();
@@ -282,22 +282,19 @@ var widget = $.widget( "ui.datepicker", {
 	},
 
 	_setLocale: function( locale ) {
-		if ( typeof locale === "string" ) {
-			globalize = new Globalize( locale );
-			locale = {
-				_locale: locale,
-				format: function( date ) {
-					return globalize.formatDate( date, { date: "short" } );
-				},
-				parse: function( stringDate ) {
-					return globalize.parseDate( stringDate, { date: "short" } );
-				},
-				parseYMD: function( stringDate ) {
-					return globalize.parseDate( stringDate, { pattern: "yyyy-MM-dd" } );
-				}
-			};
-		}
-		this.options.locale = locale;
+		var globalize = new Globalize( locale );
+
+		this._format = function( date ) {
+			return globalize.formatDate( date, { date: "short" } );
+		};
+
+		this._parse = function( stringDate ) {
+			return globalize.parseDate( stringDate, { date: "short" } );
+		};
+
+		this._parseYMD = function( stringDate ) {
+			return globalize.parseDate( stringDate, { pattern: "yyyy-MM-dd" } );
+		};
 	},
 
 	_buildPosition: function() {
@@ -306,7 +303,7 @@ var widget = $.widget( "ui.datepicker", {
 
 	value: function( value ) {
 		if ( arguments.length ) {
-			this.valueAsDate( this.options.locale.parse( value ) );
+			this.valueAsDate( this._parse( value ) );
 		} else {
 			return this._getParsedValue() ? this.element.val() : null;
 		}
@@ -316,7 +313,7 @@ var widget = $.widget( "ui.datepicker", {
 		if ( arguments.length ) {
 			if ( this.calendarInstance._isValid( value ) ) {
 				this.calendarInstance.valueAsDate( value );
-				this.element.val( this.options.locale.format( value ) );
+				this.element.val( this._format( value ) );
 			}
 		} else {
 			return this._getParsedValue();
@@ -338,7 +335,7 @@ var widget = $.widget( "ui.datepicker", {
 	},
 
 	_getParsedValue: function() {
-		return this.options.locale.parse( this.element.val() );
+		return this._parse( this.element.val() );
 	},
 
 	_setOption: function( key, value ) {