Calendar para citas

Me di cuenta que el calendario no permite mover de mes a mes tradicionalmente, lo estoy trabajando, pero en lo que lo envio para que lo tengan y despues le pongo los cambios cuando este bien

screens/main/Calendar.js

@@ -0,0 +1,53 @@
+import React, { Component } from 'react';
+import {
+  StyleSheet,
+  Text,
+  View
+} from 'react-native';
+import CalendarPicker from 'react-native-calendar-picker';
+import {Calendar, CalendarList} from 'react-native-calendars';
+
+
+export default class Calendario extends Component {
+  constructor(props) {
+    super(props);
+    this.state = {
+      selectedStartDate: null,
+    };
+    this.onDayPress = this.onDayPress.bind(this);
+    
+  }
+
+  onDayPress(date) {
+    this.setState({
+      selectedStartDate: date,
+    });
+
+    this.props.navigation.navigate('StateTime', {Appointment_Date: date});
+  }
+  
+  render() {
+    const { selectedStartDate } = this.state;
+    const today = new Date();
+    const appointment = selectedStartDate ? selectedStartDate.toString() : '';
+    return (
+      <View style={styles.container}>
+        <Calendar
+        onVisibleMonthsChange={(months) => {console.log('now these months are visible', months);}}
+          minDate={today}
+          onDayPress={this.onDayPress}
+        />
+      </View>
+    );
+  }
+}
+
+const styles = StyleSheet.create({
+  container: {
+    flex: 1,
+    backgroundColor: '#FFFFFF',
+    marginTop: 100,
+  },
+});
+   
+