Zodiac sign (javascript)

getZodiacSign.js

/**
 * Return zodiac sugn by month and day
 *
 * @param day
 * @param month
 * @return {string} name of zodiac sign
 */
function getZodiacSign(day, month) {

  var zodiacSigns = {
    'capricorn':'Козерог',
    'aquarius':'Водолей',
    'pisces':'Рыбы',
    'aries':'Овен',
    'taurus':'Телец',
    'gemini':'Близнецы',
    'cancer':'Рак',
    'leo':'Лев',
    'virgo':'Девы',
    'libra':'Весы',
    'scorpio':'Скорпион',
    'sagittarius':'Стрелец'
  }

  if((month == 1 && day <= 20) || (month == 12 && day >=22)) {
    return zodiacSigns.capricorn;
  } else if ((month == 1 && day >= 21) || (month == 2 && day <= 18)) {
    return zodiacSigns.aquarius;
  } else if((month == 2 && day >= 19) || (month == 3 && day <= 20)) {
    return zodiacSigns.pisces;
  } else if((month == 3 && day >= 21) || (month == 4 && day <= 20)) {
    return zodiacSigns.aries;
  } else if((month == 4 && day >= 21) || (month == 5 && day <= 20)) {
    return zodiacSigns.taurus;
  } else if((month == 5 && day >= 21) || (month == 6 && day <= 20)) {
    return zodiacSigns.gemini;
  } else if((month == 6 && day >= 22) || (month == 7 && day <= 22)) {
    return zodiacSigns.cancer;
  } else if((month == 7 && day >= 23) || (month == 8 && day <= 23)) {
    return zodiacSigns.leo;
  } else if((month == 8 && day >= 24) || (month == 9 && day <= 23)) {
    return zodiacSigns.virgo;
  } else if((month == 9 && day >= 24) || (month == 10 && day <= 23)) {
    return zodiacSigns.libra;
  } else if((month == 10 && day >= 24) || (month == 11 && day <= 22)) {
    return zodiacSigns.scorpio;
  } else if((month == 11 && day >= 23) || (month == 12 && day <= 21)) {
    return zodiacSigns.sagittarius;
  }
}

here's my version using Wikipedia dates, but unsure about August 23
https://github.com/tindoductran/zodiac/blob/master/getZodiac.html
UPDATE: getZodiac2() is even better uses array logic instead of multiple if/else's https://github.com/tindoductran/zodiac/blob/master/getZodiac2.html

I created this snippet to get the zodiac sign using Intl.DateTimeFormat : https://www.linkedin.com/pulse/get-zodiac-sign-current-date-javascript-mohamed-safouan-besrour/