Calculate weekdays and weekends count between two dates without considering daylight saving - javascript

Question

Due to daylight saving time in London, I'm not able to get the correct count for weekdays and weekend days. In the below fiddle 26/10/2019 is considering at times as weekday and at times as a weekend. I want to get the output for the below fiddle is "workingDays": 1, "weekendDays": 2

Any suggestions, please?

var startDate = new Date('2019-10-26');
var endDate = new Date('2019-10-28');
var workingDays = number_of_working_days(startDate, endDate);
var weekendDays = number_of_weekend_days(startDate, endDate);
console.log({
  'workingDays': workingDays,
  'weekendDays': weekendDays
})

function number_of_working_days(startDate, endDate) {
  var workingDays = 0;
  for (var i = startDate; i <= endDate; i = i + (60 * 60 * 24)) {
    if (i.getDay() <= 5) {
      workingDays = workingDays + 1;
    }

  }
  return workingDays;
}

function number_of_weekend_days(startDate, endDate) {
  var weekendDays = 0;
  for (var i = startDate; i <= endDate; i = i + (60 * 60 * 24)) {
    if (i.getDay() > 5) {
      weekendDays = weekendDays + 1;
    }
  }
  return weekendDays;
}

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