Script calculates developers days in year based on shifts

developers-days-in-year.es6

'use strict';

const CURRENT_YEAR = 2015;

// Generator that shifts days by bits
function* developersDayGenerator() {
  let day = 1;
  while (day < 365) {
    yield day;
    day = day << 1;
  }
}

// Convert day of year to normal date
const dayToDate = day => new Date(new Date(CURRENT_YEAR, 0).setDate(day)).toDateString();

// Iterate through developers' days and convert to date
for (let day of developersDayGenerator()) {
  console.log(`${(day >>> 0).toString(2)} - ${dayToDate(day)}`);
}