diff --git a/http_grab.ino b/http_grab.ino
index 163cf4a..2e97ca2 100755
--- a/http_grab.ino
+++ b/http_grab.ino
@@ -1,27 +1,31 @@
 #include <HTTPClient.h>
 
-String textBeginString = "<b>";
-String textEndString = "</b><br>";
-String sourceBeginString = textEndString;  // because source begins where text ends
-String sourceEndString = "</font></p>";
+String textBeginString = "@";
+String textEndString = "@";
+String lehrTextBeginString = "@@";
+String sourceBeginString = "@";
+String sourceEndString = "@";
+String url = "https://www.losungen.de/fileadmin/media-losungen/kalender/kalender_daten.php";
 
-String getHTML(String url) {
+String getHTML(String url, String post_params) {
   String result = "";
   if(WiFi.status() == WL_CONNECTED) {
     HTTPClient http;
     http.begin(url);  // initialize the http instance
-    int httpCode = http.GET();  // get the page; httpCode will be negative on error
+    http.addHeader("Content-Type", "application/x-www-form-urlencoded");  // add the header; needed for the POST request
+    Serial.printf("[HTTP] POST %s  | DATA: %s\n", url.c_str(), post_params.c_str());
+    int httpCode = http.POST(post_params);  // get the page; httpCode will be negative on error
 
     if(httpCode > 0) {
       // HTTP header has been send and Server response header has been handled
-      Serial.printf("[HTTP] GET %d: %s\n", httpCode, url.c_str());
+      Serial.printf("[HTTP] POST %d: %s\n", httpCode, url.c_str());
 
       // file found at server
       if(httpCode == HTTP_CODE_OK) {
           result = http.getString();
       }
     } else {
-        Serial.printf("[HTTP] GET: %s\n", http.errorToString(httpCode).c_str());
+        Serial.printf("[HTTP] POST: %s\n", http.errorToString(httpCode).c_str());
     }
 
     http.end();
@@ -39,40 +43,41 @@ String getHTML() {  // gets the date and year from time.h library
     return "";
   }
   strftime(dayInMonth,3, "%d", &timeinfo);
-  strftime(month,3, "%m", &timeinfo);
+  sprintf(month,"%d",timeinfo.tm_mon);  // the month number has to be in range 0-11!
   strftime(year,5, "%Y", &timeinfo);
 
-  return getHTML(String("https://www.losungen.de/fileadmin/media-losungen/heute/") + String(year) + String("/") + String(month) + String(dayInMonth) + String(".html"));
+  String post_params = "jahr=" + String(year) + "&monat=" + String(month) + "&tag=" + String(dayInMonth);  // create post parameters of the form "jahr=2023&monat=2&tag=2"
+  return getHTML(url, post_params);
 }
 
 String getLosungFromHTML(String html) {
   int losungBeginIndex = html.indexOf(textBeginString)+textBeginString.length();
-  int losungEndIndex = html.indexOf(textEndString);
+  int losungEndIndex = html.indexOf(textEndString,losungBeginIndex);
 
   return html.substring(losungBeginIndex, losungEndIndex);
 }
 
-String getLehrtextFromHTML(String html) {
+String getLosungSourceFromHTML(String html) {  // get the source of losung in given html
   String losung = getLosungFromHTML(html);
   int losungIndex = html.indexOf(losung);
-  int lehrtextBeginIndex = html.indexOf(textBeginString, losungIndex)+textBeginString.length();
-  int lehrtextEndIndex = html.indexOf(textEndString, losungIndex+losung.length()+textEndString.length());  // calculating is needed for better performance and to get the second index, not the first
-
-  return html.substring(lehrtextBeginIndex, lehrtextEndIndex);
-}
-
-String getLosungSourceFromHTML(String html) {  // get the source of losung in given html
-  int losungSourceBeginIndex = html.indexOf(sourceBeginString)+sourceBeginString.length();
-  int losungSourceEndIndex = html.indexOf(sourceEndString);
+  int losungSourceBeginIndex = html.indexOf(sourceBeginString, losungIndex)+sourceBeginString.length();
+  int losungSourceEndIndex = html.indexOf(sourceEndString, losungIndex+losung.length()+sourceBeginString.length());
 
   return html.substring(losungSourceBeginIndex, losungSourceEndIndex);
 }
 
+String getLehrtextFromHTML(String html) {
+  int lehrtextBeginIndex = html.indexOf(lehrTextBeginString)+lehrTextBeginString.length();
+  int lehrtextEndIndex = html.indexOf(textEndString, lehrtextBeginIndex);  // calculating is needed for better performance and to get the next index, not the current/previous
+
+  return html.substring(lehrtextBeginIndex, lehrtextEndIndex);
+}
+
 String getLehrtextSourceFromHTML(String html) {  // get the source of losung in given html
-  String losungSource = getLosungSourceFromHTML(html);
-  int losungSourceIndex = html.indexOf(losungSource);
-  int lehrtextSourceBeginIndex = html.indexOf(sourceBeginString, losungSourceIndex)+sourceBeginString.length();
-  int lehrtextSourceEndIndex = html.indexOf(sourceEndString, losungSourceIndex+losungSource.length()+sourceEndString.length());  // calculating is needed for better performance and to get the second index, not the first
+  String lehrtext = getLehrtextFromHTML(html);
+  int lehrtextIndex = html.indexOf(lehrtext);
+  int lehrtextSourceBeginIndex = html.indexOf(sourceBeginString, lehrtextIndex)+sourceBeginString.length();
+  int lehrtextSourceEndIndex = html.indexOf(sourceEndString, lehrtextSourceBeginIndex);  // calculating is needed for better performance and to get the next index, not the current/previous
 
   return html.substring(lehrtextSourceBeginIndex, lehrtextSourceEndIndex);
 }
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