diff --git a/classes/VirtuellerStundenplan.js b/classes/VirtuellerStundenplan.js
index ebf4070..a2ffa85 100644
--- a/classes/VirtuellerStundenplan.js
+++ b/classes/VirtuellerStundenplan.js
@@ -13,7 +13,7 @@ class VirtuellerStundenplan {
         this.#password = config.password;
         if(config.key) this.key = config.key;
 
-        //this.teacherList = config.teachers;
+        this.holidays = config.holidays;
     }
 
     async fetchKey(returnKey=false) {
@@ -189,7 +189,7 @@ class VirtuellerStundenplan {
 
             const hasContent = /[\da-zA-Z]/.test(JSON.stringify(day));
 
-            res.content[i] = hasContent ? new TimetableDay(day) : null;
+            res.content[i] = hasContent ? new TimetableDay(day, this.holidays) : null;
         }
 
         return res;
diff --git a/classes/parsers/TimetableDay.js b/classes/parsers/TimetableDay.js
index d14c251..afa15fb 100644
--- a/classes/parsers/TimetableDay.js
+++ b/classes/parsers/TimetableDay.js
@@ -3,12 +3,11 @@ const TimetableHour = require("./TimetableHour");
 class TimetableDay {
     first = null;
     last = null;
+    holiday = false;
 
-    constructor(data) {
+    constructor(data, holidays=defaultHolidays) {
         this.hours = [];
 
-        //console.log(data)
-
         for (let i = 0; i < data[0].length; i++) {
             const hour = [
                 data[0][i],
@@ -16,7 +15,16 @@ class TimetableDay {
                 data[2][i],
                 data[3][i],
                 data[4][i],
-            ]
+            ];
+
+            const allSame = sameHours(data);
+
+            console.log(allSame)
+
+            if(holidays.includes(allSame)) {
+                this.holiday = allSame;
+                return;
+            }
 
             const hasContent = /[\da-zA-Z]/.test(JSON.stringify(hour));
 
@@ -28,6 +36,44 @@ class TimetableDay {
             this.hours[i] = hasContent ? new TimetableHour(hour) : null;
         }
     }
+
+    get isHoliday() {
+        return this.holiday !== false;
+    }
+
+    get holidayName() {
+        return this.isHoliday ? this.holiday : null;
+    }
 }
 
+/**
+ * Checks if the day only has the same hours (e.g. "-", "Himmelfahrt")
+ * 
+ * @param {Array} day (Nested) Day as an array.
+ * @returns {false|string} False if they differ. When not it returns the only existing value.
+ */
+const sameHours = day => {
+    // Only include column teacher, subject and room.
+    // Exam always "-", except for when there's exams.
+    day = [day[0], day[1], day[2]];
+
+    const flat = day.flat(); // from [["x","x"]] to ["x","x"]
+    const first = flat[0];
+    return flat.every(val => val === first) ? first : false;
+};
+
+const defaultHolidays = [
+    "Sommerferien",
+    "Tag der Deutschen Einheit",
+    "Herbstferien",
+    "Reformationstag",
+    "Weihnachtsferien",
+    "Winterferien",
+    "Osterferien",
+    "Tag der Arbeit",
+    "Himmelfahrt",
+    "Pfingsten",
+];
+
+
 module.exports = TimetableDay;
\ No newline at end of file