diff --git a/http_grab.ino b/http_grab.ino
index 2e97ca2..32dffcf 100755
--- a/http_grab.ino
+++ b/http_grab.ino
@@ -34,19 +34,17 @@ String getHTML(String url, String post_params) {
 }
 String getHTML() {  // gets the date and year from time.h library
   struct tm timeinfo;
-  char dayInMonth[3];
-  char month[3];
+  char dayInYear[4];
   char year[5];
 
   if(!getLocalTime(&timeinfo)){
     Serial.println("Failed to obtain time");
     return "";
   }
-  strftime(dayInMonth,3, "%d", &timeinfo);
-  sprintf(month,"%d",timeinfo.tm_mon);  // the month number has to be in range 0-11!
+  sprintf(dayInYear,"%d",timeinfo.tm_yday+1);
   strftime(year,5, "%Y", &timeinfo);
 
-  String post_params = "jahr=" + String(year) + "&monat=" + String(month) + "&tag=" + String(dayInMonth);  // create post parameters of the form "jahr=2023&monat=2&tag=2"
+  String post_params = "jahr=" + String(year) + "&tagid=" + String(dayInYear);  // create post parameters of the form "jahr=YYYY&tagid=III" where III is the day in the year
   return getHTML(url, post_params);
 }