if timezoneOffset is undefined, pass null to the iOS dateTime picker. Without doing this, behaviour becomes unpredictable and the incorrect date can be returned.

Author: andrew-bednarz-isobar

datepicker.js

@@ -391,7 +391,7 @@ class DatePicker extends Component {
                         maximumDate={maxDate && this.getDate(maxDate)}
                         onDateChange={this.onDateChange}
                         minuteInterval={minuteInterval}
-                        timeZoneOffsetInMinutes={timeZoneOffsetInMinutes}
+                        timeZoneOffsetInMinutes={timeZoneOffsetInMinutes ? timeZoneOffsetInMinutes : null}
                         style={[Style.datePicker, customStyles.datePicker]}
                       />
                     </View>