diff --git a/README.md b/README.md
index d5076b7..51fc7f3 100755
--- a/README.md
+++ b/README.md
@@ -10,13 +10,20 @@ Supported e-Paper display: 2.7inch e-Paper HAT of Waveshare
 
 1. The ESP32 connects to WiFi (for configuration, see Section "Install")
 2. It connects to an NTP (Network Time Protocol) Server, and grabs the date
-3. It gets today's daily text (in german) over HTTP GET. The URL format is:
+3. It gets today's daily text (in german) over HTTP POST to *https://www.losungen.de/fileadmin/media-losungen/kalender/kalender_daten.php*. Also a line is appended to the HTTP Header
 ```
-https://www.losungen.de/fileadmin/media-losungen/heute/YYYY/MMDD.html
-``` 
-4. Then the HTML page is parsed and the daily text is being formatted for displaying.
-5. The texts get rendered on the e-Paper.
-6. The ESP32 goes into deep sleep mode.
+Content-Type", "application/x-www-form-urlencoded
+```
+
+4. POST parameters:
+    - **jahr**: Year (YYYY)
+    - **tagid**: The number of days passed since year began (beginning with 1)
+5. Then the HTML page is parsed and the daily text is being formatted for displaying.
+6. The texts get rendered on the e-Paper.
+7. The ESP32 goes into deep sleep mode.
+
+The POST parameters can be found out by looking up the functionality of [this](https://www.losungen.de/fileadmin/media-losungen/kalender/) cool, yet existing web parser.
+
 
 ## Install