Edite home_page, confirm y cita para que se desplegen las palabras mes, dia, hora.

screens/main/Cita.js

         }}
         >
           <List.Item
-            title={item.Month}
+            title='Mes:'
+            description={item.Month}
             titleNumberOfLines={1}
             titleStyle={styles.listTitle}
             descriptionStyle={styles.listDescription}
             descriptionNumberOfLines={1}
           />
           <List.Item
-            title={item.Day}
+            title='Día'
+            description={item.Day}
             titleNumberOfLines={1}
             titleStyle={styles.listTitle}
             descriptionStyle={styles.listDescription}
             descriptionNumberOfLines={1}
           />
           <List.Item
-            title={item.Time}
+            title='Hora:'
+            description={item.Time}
             titleNumberOfLines={1}
             titleStyle={styles.listTitle}
             descriptionStyle={styles.listDescription}

screens/main/Confirm.js

           Time:'',
           i_token:'',
           u_token:'',
-          Pin: {},
           ...docSnap.data()
         };
       });
   const dimensions = Dimensions.get('window');
   const screenWidth = dimensions.width;
 
-  const Pin = appointments[0];
-  console.log("PIN EN CONFIRM",Pin)
   
   return (
       <ImageBackground style={styles.stdcontainer} source={require('../../assets/yellow-white.jpg')}>
             console.log("date");
           }}
           >
-            <List.Item
-              title={item.Month}
-              titleNumberOfLines={1}
-              titleStyle={styles.listTitle}
-              descriptionStyle={styles.listDescription}
-              descriptionNumberOfLines={1}
-            />
-            <List.Item
-              title={item.Day}
-              titleNumberOfLines={1}
-              titleStyle={styles.listTitle}
-              descriptionStyle={styles.listDescription}
-              descriptionNumberOfLines={1}
-            />
-            <List.Item
-              title={item.Time}
-              titleNumberOfLines={1}
-              titleStyle={styles.listTitle}
-              descriptionStyle={styles.listDescription}
-              descriptionNumberOfLines={1}
-            />
+          <List.Item
+            title='Mes:'
+            description={item.Month}
+            titleNumberOfLines={1}
+            titleStyle={styles.listTitle}
+            descriptionStyle={styles.listDescription}
+            descriptionNumberOfLines={1}
+          />
+          <List.Item
+            title='Día'
+            description={item.Day}
+            titleNumberOfLines={1}
+            titleStyle={styles.listTitle}
+            descriptionStyle={styles.listDescription}
+            descriptionNumberOfLines={1}
+          />
+          <List.Item
+            title='Hora:'
+            description={item.Time}
+            titleNumberOfLines={1}
+            titleStyle={styles.listTitle}
+            descriptionStyle={styles.listDescription}
+            descriptionNumberOfLines={1}
+          />
           </TouchableOpacity>
         )}
         />
        <Button
         title ='Ver mapa'
-        onPress= {() => navigation.navigate('Map', {View_Only: true, Pin: Pin})}
+        onPress= {() => navigation.navigate('Map')}
       />
       <FlatList style={{
              flex: 1,

screens/main/Home_page.js

           navigation.navigate('Cita',{tag: item, Pin: item})
         }}
         >
-          <List.Item
-            title={item.Month}
+           <List.Item
+            title='Mes:'
+            description={item.Month}
             titleNumberOfLines={1}
             titleStyle={styles.listTitle}
             descriptionStyle={styles.listDescription}
             descriptionNumberOfLines={1}
           />
           <List.Item
-            title={item.Day}
+            title='Día'
+            description={item.Day}
             titleNumberOfLines={1}
             titleStyle={styles.listTitle}
             descriptionStyle={styles.listDescription}
             descriptionNumberOfLines={1}
           />
           <List.Item
-            title={item.Time}
+            title='Hora:'
+            description={item.Time}
             titleNumberOfLines={1}
             titleStyle={styles.listTitle}
             descriptionStyle={styles.listDescription}
             navigation.navigate('Cita',{tag: item, Pin: item})
           }}
           >
-            <List.Item
-              title={item.Month}
-              titleNumberOfLines={1}
-              titleStyle={styles.listTitle}
-              descriptionStyle={styles.listDescription}
-              descriptionNumberOfLines={1}
-            />
-            <List.Item
-              title={item.Day}
-              titleNumberOfLines={1}
-              titleStyle={styles.listTitle}
-              descriptionStyle={styles.listDescription}
-              descriptionNumberOfLines={1}
-            />
-            <List.Item
-              title={item.Time}
-              titleNumberOfLines={1}
-              titleStyle={styles.listTitle}
-              descriptionStyle={styles.listDescription}
-              descriptionNumberOfLines={1}
-            />
+          <List.Item
+            title='Mes:'
+            description={item.Month}
+            titleNumberOfLines={1}
+            titleStyle={styles.listTitle}
+            descriptionStyle={styles.listDescription}
+            descriptionNumberOfLines={1}
+          />
+          <List.Item
+            title='Día'
+            description={item.Day}
+            titleNumberOfLines={1}
+            titleStyle={styles.listTitle}
+            descriptionStyle={styles.listDescription}
+            descriptionNumberOfLines={1}
+          />
+          <List.Item
+            title='Hora:'
+            description={item.Time}
+            titleNumberOfLines={1}
+            titleStyle={styles.listTitle}
+            descriptionStyle={styles.listDescription}
+            descriptionNumberOfLines={1}
+          />
           </TouchableOpacity>
         )}
             />