diff --git a/codewars/7kyu/next-birth-day-of-the-week-finder/koronya.js b/codewars/7kyu/next-birth-day-of-the-week-finder/koronya.js
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index 000000000..677ca50db
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+++ b/codewars/7kyu/next-birth-day-of-the-week-finder/koronya.js
@@ -0,0 +1,32 @@
+// [JS][7kyu] Next birth-day of the week finder
+// next-birth-day-of-the-week-finder
+// https://www.codewars.com/kata/547336f44481cf5ecc000dde/train/javascript
+
+const isLeapYear = (year) => (year % 4 === 0 && year % 100 !== 0) || year % 400 === 0
+
+const nextBirthdayOfTheWeek = (birthday) => {
+  const birthDate = birthday.getDate()
+  const birthMonth = birthday.getMonth()
+  const birthYear = birthday.getYear() + 1900
+  // prettier-ignore
+  const isStartThisYear = birthMonth > 1
+    ? false
+    : birthMonth === 1 && birthDate === 28 && isLeapYear(birthYear)
+      ? false
+      : true
+
+  let count = 0
+  let year = isStartThisYear ? birthYear : birthYear + 1
+  while (true) {
+    if (count % 7 === 0 && count > 0) {
+      break
+    }
+    count += isLeapYear(year) ? 2 : 1
+    year += 1
+  }
+  return year - birthYear - (isStartThisYear ? 0 : 1)
+}
+
+// nextBirthdayOfTheWeek(new Date(1990, 9, 16)) //11
+// nextBirthdayOfTheWeek(new Date(2012, 5, 20)) //6
+// nextBirthdayOfTheWeek(new Date(1975, 2, 22)) //5