diff --git a/README.md b/README.md
index fd3275861e..f0c00c5ef3 100644
--- a/README.md
+++ b/README.md
@@ -76,6 +76,7 @@ You can check [index.js](https://github.com/xgfe/react-native-datepicker/blob/ma
 | customStyles | - | `number` | The hook of customize datepicker style, same as the native style. `dateTouchBody`, `dateInput`...|
 | showIcon | true | `boolean` | Controller whether or not show the icon |
 | disabled | false | `boolean` | Controller whether or not disable the picker |
+| is24Hour | - | `boolean` | Set the TimePicker is24Hour flag. The default value depend on `format`. Only work in Android |
 | placeholder | '' | `string` | The placeholder show when this.props.date is falsy |
 | onDateChange | - | `function` | This is called when the user confirm the picked date or time in the UI. The first and only argument is a date or time string representing the new date and time formatted by [moment.js](http://momentjs.com/) with the given format property. |
 | modalOnResponderTerminationRequest | - | `function` | Set the callback for React Native's [Gesture Responder System](https://facebook.github.io/react-native/docs/gesture-responder-system.html#responder-lifecycle)'s call to `onResponderTerminationRequest`. By default this will reject a termination request, but can be overidden in case the View under the Modal is implementing custom gesture responders, and you wish for those to be overidden in certain cases.  |
diff --git a/index.js b/index.js
index a63913b52a..ebb4e8a152 100644
--- a/index.js
+++ b/index.js
@@ -159,12 +159,13 @@ class DatePicker extends Component {
 
   onDatetimePicked({action, year, month, day}) {
     if (action !== DatePickerAndroid.dismissedAction) {
+      const {is24Hour = !this.format.match(/h|a/)} = this.props;
       let timeMoment = Moment(this.state.date);
 
       TimePickerAndroid.open({
         hour: timeMoment.hour(),
         minute: timeMoment.minutes(),
-        is24Hour: !this.format.match(/h|a/)
+        is24Hour: is24Hour
       }).then(this.onDatetimeTimePicked.bind(this, year, month, day));
     }
   }
@@ -191,6 +192,7 @@ class DatePicker extends Component {
     if (Platform.OS === 'ios') {
       this.setModalVisible(true);
     } else {
+      const {is24Hour = !this.format.match(/h|a/)} = this.props;
 
       // 选日期
       if (this.props.mode === 'date') {
@@ -207,7 +209,7 @@ class DatePicker extends Component {
         TimePickerAndroid.open({
           hour: timeMoment.hour(),
           minute: timeMoment.minutes(),
-          is24Hour: !this.format.match(/h|a/)
+          is24Hour: is24Hour
         }).then(this.onTimePicked);
       } else if (this.props.mode === 'datetime') {
         // 选日期和时间
@@ -341,7 +343,8 @@ DatePicker.propTypes = {
   disabled: React.PropTypes.bool,
   onDateChange: React.PropTypes.func,
   placeholder: React.PropTypes.string,
-  modalOnResponderTerminationRequest: React.PropTypes.func
+  modalOnResponderTerminationRequest: React.PropTypes.func,
+  is24Hour: React.PropTypes.bool
 };
 
 export default DatePicker;