diff --git a/anwendung/src/components/Test.jsx b/anwendung/src/components/Test.jsx
index 08b187b..310af23 100644
--- a/anwendung/src/components/Test.jsx
+++ b/anwendung/src/components/Test.jsx
@@ -1,15 +1,19 @@
 export default function Test(p)
 {
 
-    let datum = new Date(2023, 1, 10);
-    let start = new Date(datum.getFullYear(), 0, 0);
+    // let datum = new Date(2023, 1, 10);
+    // let start = new Date(datum.getFullYear(), 0, 0);
+    //
+    // let difference = (datum - start) / (1000 * 60 * 60 * 24)
 
-    let difference = (datum - start) / (1000 * 60 * 60 * 24)
+
+    let day = 41
+    let datum = new Date(2023, 0, 30)
 
     return (
 
         <div>
-            <p>{difference}</p>
+            <p>{datum.getMonth()}</p>
         </div>
     );
 }
\ No newline at end of file
diff --git a/backend/database.mv.db b/backend/database.mv.db
index e106e21..a11248b 100644
Binary files a/backend/database.mv.db and b/backend/database.mv.db differ
diff --git a/backend/database.trace.db b/backend/database.trace.db
index 6a33ef5..94c7e61 100644
--- a/backend/database.trace.db
+++ b/backend/database.trace.db
@@ -1563,3 +1563,103 @@ No data is available [2000-214]
 2023-05-14 22:08:48 jdbc[3]: exception
 org.h2.jdbc.JdbcSQLNonTransientException: Keine Daten verfügbar
 No data is available [2000-214]
+2023-05-16 10:52:37 jdbc[3]: exception
+org.h2.jdbc.JdbcSQLSyntaxErrorException: Syntax Fehler in SQL Befehl "create table days (id int auto_increment, dayinyear int, [*]year int, semesterid int)"; erwartet "identifier"
+Syntax error in SQL statement "create table days (id int auto_increment, dayinyear int, [*]year int, semesterid int)"; expected "identifier"; SQL statement:
+create table days (id int auto_increment, dayinyear int, year int, semesterid int) [42001-214]
+2023-05-16 10:54:14 jdbc[3]: exception
+org.h2.jdbc.JdbcSQLSyntaxErrorException: Syntax Fehler in SQL Befehl "create table days (id int auto_increment, dayinyear int, [*]year int, semesterid int)"; erwartet "identifier"
+Syntax error in SQL statement "create table days (id int auto_increment, dayinyear int, [*]year int, semesterid int)"; expected "identifier"; SQL statement:
+create table days (id int auto_increment, dayinyear int, year int, semesterid int) [42001-214]
+2023-05-16 08:55:41 jdbc[3]: exception
+java.sql.SQLClientInfoException: Client info name 'ApplicationName' not supported.
+	at org.h2.jdbc.JdbcConnection.setClientInfo(JdbcConnection.java:1573)
+	at com.intellij.database.remote.jdbc.impl.RemoteConnectionImpl.setClientInfo(RemoteConnectionImpl.java:469)
+	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
+	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
+	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
+	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
+	at java.rmi/sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:360)
+	at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:200)
+	at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:197)
+	at java.base/java.security.AccessController.doPrivileged(AccessController.java:712)
+	at java.rmi/sun.rmi.transport.Transport.serviceCall(Transport.java:196)
+	at java.rmi/sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:587)
+	at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:828)
+	at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:705)
+	at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
+	at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:704)
+	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
+	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
+	at java.base/java.lang.Thread.run(Thread.java:833)
+2023-05-16 08:55:56 jdbc[3]: exception
+java.sql.SQLClientInfoException: Client info name 'ApplicationName' not supported.
+	at org.h2.jdbc.JdbcConnection.setClientInfo(JdbcConnection.java:1573)
+	at com.intellij.database.remote.jdbc.impl.RemoteConnectionImpl.setClientInfo(RemoteConnectionImpl.java:469)
+	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
+	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
+	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
+	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
+	at java.rmi/sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:360)
+	at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:200)
+	at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:197)
+	at java.base/java.security.AccessController.doPrivileged(AccessController.java:712)
+	at java.rmi/sun.rmi.transport.Transport.serviceCall(Transport.java:196)
+	at java.rmi/sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:587)
+	at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:828)
+	at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:705)
+	at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
+	at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:704)
+	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
+	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
+	at java.base/java.lang.Thread.run(Thread.java:833)
+2023-05-16 08:56:44 jdbc[3]: exception
+org.h2.jdbc.JdbcSQLSyntaxErrorException: Syntax Fehler in SQL Befehl "create table days (id int auto_increment, dayinyear int, [*]year int, semesterid int)"; erwartet "identifier"
+Syntax error in SQL statement "create table days (id int auto_increment, dayinyear int, [*]year int, semesterid int)"; expected "identifier"; SQL statement:
+create table days (id int auto_increment, dayinyear int, year int, semesterid int) [42001-210]
+2023-05-16 08:56:44 jdbc[4]: exception
+java.sql.SQLClientInfoException: Client info name 'ApplicationName' not supported.
+	at org.h2.jdbc.JdbcConnection.setClientInfo(JdbcConnection.java:1573)
+	at com.intellij.database.remote.jdbc.impl.RemoteConnectionImpl.setClientInfo(RemoteConnectionImpl.java:469)
+	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
+	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
+	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
+	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
+	at java.rmi/sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:360)
+	at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:200)
+	at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:197)
+	at java.base/java.security.AccessController.doPrivileged(AccessController.java:712)
+	at java.rmi/sun.rmi.transport.Transport.serviceCall(Transport.java:196)
+	at java.rmi/sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:587)
+	at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:828)
+	at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:705)
+	at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
+	at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:704)
+	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
+	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
+	at java.base/java.lang.Thread.run(Thread.java:833)
+2023-05-16 08:56:53 jdbc[5]: exception
+java.sql.SQLClientInfoException: Client info name 'ApplicationName' not supported.
+	at org.h2.jdbc.JdbcConnection.setClientInfo(JdbcConnection.java:1573)
+	at com.intellij.database.remote.jdbc.impl.RemoteConnectionImpl.setClientInfo(RemoteConnectionImpl.java:469)
+	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
+	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
+	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
+	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
+	at java.rmi/sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:360)
+	at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:200)
+	at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:197)
+	at java.base/java.security.AccessController.doPrivileged(AccessController.java:712)
+	at java.rmi/sun.rmi.transport.Transport.serviceCall(Transport.java:196)
+	at java.rmi/sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:587)
+	at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:828)
+	at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:705)
+	at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
+	at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:704)
+	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
+	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
+	at java.base/java.lang.Thread.run(Thread.java:833)
+2023-05-16 11:03:36 jdbc[3]: exception
+org.h2.jdbc.JdbcSQLSyntaxErrorException: Tabelle "ENTRY" nicht gefunden
+Table "ENTRY" not found; SQL statement:
+select * from entry [42102-214]
diff --git a/backend/src/main/java/com/example/backend/anwprj/Semesters/Semester.java b/backend/src/main/java/com/example/backend/anwprj/Semesters/Semester.java
index 852a8a1..19be372 100644
--- a/backend/src/main/java/com/example/backend/anwprj/Semesters/Semester.java
+++ b/backend/src/main/java/com/example/backend/anwprj/Semesters/Semester.java
@@ -4,49 +4,42 @@ package com.example.backend.anwprj.Semesters;
 public class Semester
 {
     private int id;
-    private int startweeknumber;
-    private int endweeknumber;
+    private int startday;
+    private int endday;
     private String name;
     private int startyear;
     private int endyear;
 
-    public Semester(int id, int startweeknumber, int endweeknumber, String name, int startyear, int endyear)
-    {
+    public Semester(int id, int startday, int endday, String name, int startyear, int endyear) {
         this.id = id;
-        this.startweeknumber = startweeknumber;
-        this.endweeknumber = endweeknumber;
+        this.startday = startday;
+        this.endday = endday;
         this.name = name;
         this.startyear = startyear;
         this.endyear = endyear;
     }
 
-    public int getId()
-    {
+    public int getId() {
         return id;
     }
 
-    public int getStartweeknumber()
-    {
-        return startweeknumber;
+    public int getStartday() {
+        return startday;
     }
 
-    public int getEndweeknumber()
-    {
-        return endweeknumber;
+    public int getEndday() {
+        return endday;
     }
 
-    public String getName()
-    {
+    public String getName() {
         return name;
     }
 
-    public int getStartyear()
-    {
+    public int getStartyear() {
         return startyear;
     }
 
-    public int getEndyear()
-    {
+    public int getEndyear() {
         return endyear;
     }
 }