Initial state

js/date_functions.js

@@ -0,0 +1,14 @@
+// function that receives two hours in hh:mm format and compares as a spaceship operator
+export function compareHours(h1, h2) {
+    const [h1h, h1m] = h1.split(":").map(Number);
+    const [h2h, h2m] = h2.split(":").map(Number);
+    if (h1h > h2h)
+        return 1;
+    if (h1h < h2h)
+        return -1;
+    if (h1m > h2m)
+        return 1;
+    if (h1m < h2m)
+        return -1;
+    return 0;
+}