diff --git a/src/js/opendocument/OpenDocument.OdsConverter.js b/src/js/opendocument/OpenDocument.OdsConverter.js
index 263073c..b09c24b 100644
--- a/src/js/opendocument/OpenDocument.OdsConverter.js
+++ b/src/js/opendocument/OpenDocument.OdsConverter.js
@@ -103,7 +103,8 @@ OpenDocument.OdsConverter.prototype.convert = function (table, options) {
                        .addNumberTableCell(odCell);
                break;
             case "date":
-               odCell.styleName = styleManager.getAutomaticCellStyleName("date", odCell.styleName);
+               let datePattern = "YYYY-MM-DD";
+               odCell.styleName = styleManager.getAutomaticCellStyleName("date", odCell.styleName, datePattern);
                xw
                        .addDateTableCell(odCell);
                break;
diff --git a/src/js/opendocument/OpenDocument.StyleManager.js b/src/js/opendocument/OpenDocument.StyleManager.js
index fcc35f3..c7265f0 100644
--- a/src/js/opendocument/OpenDocument.StyleManager.js
+++ b/src/js/opendocument/OpenDocument.StyleManager.js
@@ -16,8 +16,10 @@ OpenDocument.StyleManager = function () {
     for(let object of OpenDocument.StyleManager.DEFAULT_STYLES ) {
         this.putStyle(object.type + "-named", _buildDefault(object));
     }
-    this.automaticStyleNumber = 1;
-    this.currencyMap = new Map();
+    this.automaticCellStyleNumber = 1;
+    this.dataStyleNumber = 1;
+    this.currencyDataStyleMap = new Map();
+    this.dateDataStyleMap = new Map();
     OpenDocument.StyleManager.readDocumentStyleSheets(this);
     
     function _buildDefault(object) {
@@ -68,35 +70,22 @@ OpenDocument.StyleManager.prototype.getStyle = function (mapName, styleKey) {
     return this.map.get(styleKey);
 };
 
-OpenDocument.StyleManager.prototype.getAutomaticCellStyleName = function (type, parentStyleName, currencyCode) {
-    var styleKey = type + ":";
-    if (type === "currency") {
-        styleKey += currencyCode + ":";
-    }
-    styleKey += parentStyleName;
+OpenDocument.StyleManager.prototype.getAutomaticCellStyleName = function (type, parentStyleName, cellOption) {
+    var styleKey = _buildStyleKey();
     if (this.hasStyle("cell-automatic", styleKey)) {
         return this.getStyle("cell-automatic", styleKey).styleName;
     }
-    var name = OpenDocument.CELLSTYLE_PREFIX + this.automaticStyleNumber;
-    this.automaticStyleNumber++;
+    var automaticCellStyleName = this.getNewAutomaticeCellStyleName();
     var dataStyleName = null;
     switch(type) {
         case "date":
-            dataStyleName = OpenDocument.ISODATE_DATASTYLE_NAME;
+            dataStyleName = this.getMatchingDateDataStyleName(cellOption);
             break;
         case "currency":
-            let number;
-            if (this.currencyMap.has(currencyCode)) {
-                number = this.currencyMap.get(currencyCode);
-            } else {
-                number = this.automaticStyleNumber;
-                this.automaticStyleNumber++;
-                this.currencyMap.set(currencyCode, number);
-            }
-            dataStyleName = OpenDocument.DATASTYLE_PREFIX + number;
+            dataStyleName = this.getMatchingCurrencyDataStyleName(cellOption);
             break;
     }
-    var cellStyle = new OpenDocument.Style("cell", name);
+    var cellStyle = new OpenDocument.Style("cell", automaticCellStyleName);
     if (parentStyleName) {
         cellStyle.setParent(parentStyleName);
     } else {
@@ -106,9 +95,46 @@ OpenDocument.StyleManager.prototype.getAutomaticCellStyleName = function (type,
         cellStyle.setDataStyle(dataStyleName);
     }
     this.putStyle("cell-automatic", cellStyle, styleKey);
+    return automaticCellStyleName;
+    
+    function _buildStyleKey() {
+        let key = type + ":";
+        if (cellOption) {
+            key += cellOption + ":";
+        }
+        key += parentStyleName;
+        return key;
+    }
+};
+
+OpenDocument.StyleManager.prototype.getNewAutomaticeCellStyleName = function () {
+    var name = OpenDocument.CELLSTYLE_PREFIX + this.automaticCellStyleNumber;
+    this.automaticCellStyleNumber++;
     return name;
 };
 
+OpenDocument.StyleManager.prototype.getMatchingCurrencyDataStyleName = function (currencyCode) {
+    if (this.currencyDataStyleMap.has(currencyCode)) {
+        return this.currencyDataStyleMap.get(currencyCode);
+    } else {
+        let dataStyleName = OpenDocument.DATASTYLE_PREFIX + this.dataStyleNumber;
+        this.dataStyleNumber++;
+        this.currencyDataStyleMap.set(currencyCode, dataStyleName);
+        return dataStyleName;
+    }
+};
+
+OpenDocument.StyleManager.prototype.getMatchingDateDataStyleName = function (datePattern) {
+    if (this.dateDataStyleMap.has(datePattern)) {
+        return this.dateDataStyleMap.get(datePattern);
+    } else {
+        let dataStyleName = OpenDocument.DATASTYLE_PREFIX + this.dataStyleNumber;
+        this.dataStyleNumber++;
+        this.dateDataStyleMap.set(datePattern, dataStyleName);
+        return dataStyleName;
+    }
+};
+
 OpenDocument.StyleManager.prototype.getMatchingStyleName = function (type, element) {
     var map = this.matchingClassMaps.get(type);
     if (map) {
@@ -135,9 +161,11 @@ OpenDocument.StyleManager.prototype.writeStyles = function (mapName, xmlWriter)
 };
 
 OpenDocument.StyleManager.prototype.writeDataStyles = function (xmlWriter) {
-    xmlWriter
-            .addDateStyle();
-    for(let entry of this.currencyMap) {
+    for(let entry of this.dateDataStyleMap) {
+        xmlWriter
+                .addDateStyle(entry[0], entry[1]);
+    }
+    for(let entry of this.currencyDataStyleMap) {
         xmlWriter
                 .addCurrencyStyle(entry[0], entry[1]);
     }
diff --git a/src/js/opendocument/OpenDocument.XmlWriter.js b/src/js/opendocument/OpenDocument.XmlWriter.js
index cebddd4..72418b2 100644
--- a/src/js/opendocument/OpenDocument.XmlWriter.js
+++ b/src/js/opendocument/OpenDocument.XmlWriter.js
@@ -193,10 +193,10 @@ OpenDocument.XmlWriter.prototype.closeStyle = function () {
     return this;
 };
 
-OpenDocument.XmlWriter.prototype.addDateStyle = function () {
+OpenDocument.XmlWriter.prototype.addDateStyle = function (datePattern, dataStyleName) {
     this
             .startOpenTag("number:date-style")
-            .addAttribute("style:name", OpenDocument.ISODATE_DATASTYLE_NAME)
+            .addAttribute("style:name", dataStyleName)
             .endOpenTag()
             .startOpenTag("number:year")
             .addAttribute("number:style", "long")
@@ -213,9 +213,8 @@ OpenDocument.XmlWriter.prototype.addDateStyle = function () {
     return this;
 };
 
-OpenDocument.XmlWriter.prototype.addCurrencyStyle = function (currencyCode, number) {
+OpenDocument.XmlWriter.prototype.addCurrencyStyle = function (currencyCode, dataStyleName) {
     var currency = Currency.get(currencyCode);
-    var dataStyleName = OpenDocument.DATASTYLE_PREFIX + number;
     this
             .startOpenTag("number:currency-style")
             .addAttribute("style:name", dataStyleName + "P0")
diff --git a/src/js/opendocument/OpenDocument.js b/src/js/opendocument/OpenDocument.js
index 4b5a9c7..776a492 100644
--- a/src/js/opendocument/OpenDocument.js
+++ b/src/js/opendocument/OpenDocument.js
@@ -6,7 +6,6 @@
 var OpenDocument = {};
 
 OpenDocument.DEFAULT_CELLSTYLE_NAME = "Default";
-OpenDocument.ISODATE_DATASTYLE_NAME = "N101";
 OpenDocument.COLUMNSTYLE_PREFIX = "co";
 OpenDocument.CELLSTYLE_PREFIX = "ce";
 OpenDocument.DATASTYLE_PREFIX = "N";