Materialdatepicker returning wrong value android studio

Question

I’m using Materialdatepicker in android studio so the user can choose the date of birth, after selecting the date, the value returned is a long with the timestamp of the selected date (milliseconds since 01/01/1970). The problem is that the result obtained is slightly wrong, example: If the user selects the date 05/10/1998, the date returned is one day before this, ie the calendar returns 04/10/1998.

My code:

    Calendar calendar = Calendar.getInstance();
    MaterialDatePicker.Builder<Long> builder = 
    MaterialDatePicker.Builder.datePicker();

    MaterialDatePicker<Long> picker = builder.build();

    picker.show(getChildFragmentManager(), picker.toString());

    picker.addOnPositiveButtonClickListener(new MaterialPickerOnPositiveButtonClickListener<Long>() {
        @Override
        public void onPositiveButtonClick(Long selection) {

            calendar.setTimeInMillis(selection);


        }
    });

The instance of calendar, now with timeInMillis has the date selectioanda, only with a day before. How can I fix this?