diff --git a/200204/ksundong/Solution.java b/200204/ksundong/Solution.java
new file mode 100644
index 0000000..8bf6345
--- /dev/null
+++ b/200204/ksundong/Solution.java
@@ -0,0 +1,20 @@
+/*
+ * 프로그래머스 2016년 - https://programmers.co.kr/learn/courses/30/lessons/12901
+ * - Test Case를 하나 만들었다.
+ * - 너무 쉬웠다. 역시 CodeSquad Java Playground!
+ * - https://www.inflearn.com/course/java-codesquad/dashboard
+ */
+public class Solution {
+    public String solution(int a, int b) {
+        String[] dayOfWeek = {"SUN", "MON", "TUE", "WED", "THU", "FRI", "SAT"};
+        int dateCount = 5;
+        int[] monthDayArray = {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
+
+        for (int i = 0; i < a - 1; i++) {
+            dateCount += monthDayArray[i];
+        }
+        dateCount += b - 1;
+
+        return dayOfWeek[dateCount % 7];
+    }
+}
diff --git a/200204/ksundong/SolutionTest.java b/200204/ksundong/SolutionTest.java
new file mode 100644
index 0000000..b929549
--- /dev/null
+++ b/200204/ksundong/SolutionTest.java
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+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+class SolutionTest {
+    Solution solution;
+
+    @BeforeEach
+    void setUp() {
+        solution = new Solution();
+    }
+
+    @Test
+    void testSolution1() {
+        int month = 5;
+        int date = 24;
+        String expected = "TUE";
+        String actual = solution.solution(month, date);
+        assertEquals(expected, actual, "원하는 요일명과 일치하지 않습니다.");
+    }
+
+    @Test
+    void testSolution2() {
+        int month = 1;
+        int date = 1;
+        String expected = "FRI";
+        String actual = solution.solution(month, date);
+        assertEquals(expected, actual, "원하는 요일명과 일치하지 않습니다.");
+    }
+}