diff --git a/src/CHANGES.md b/src/CHANGES.md
index 1b1bccab..af1ecd86 100644
--- a/src/CHANGES.md
+++ b/src/CHANGES.md
@@ -1,5 +1,10 @@
 # Development Changes
 
+## 0.8.97 - 2024-03-22
+* add support for newest generation of inverters with A-F in their serial number
+* fix NTP and sunrise / sunset
+* set default coordinates to the mid of Germany #1516
+
 ## 0.8.96 - 2024-03-21
 * fix precision of power limit in `/live` #1517
 * fix translation of `Werte ausgeben` in `settings` #1507
diff --git a/src/app.cpp b/src/app.cpp
index 37b0a37a..119894f1 100644
--- a/src/app.cpp
+++ b/src/app.cpp
@@ -204,8 +204,13 @@ void app::regularTickers(void) {
     #endif /*ENABLE_SIMULATOR*/
 }
 
+//-----------------------------------------------------------------------------
 void app::onNtpUpdate(bool gotTime) {
     mNtpReceived = true;
+    if ((0 == mSunrise) && (0.0 != mConfig->sun.lat) && (0.0 != mConfig->sun.lon)) {
+        mCalculatedTimezoneOffset = (int8_t)((mConfig->sun.lon >= 0 ? mConfig->sun.lon + 7.5 : mConfig->sun.lon - 7.5) / 15) * 3600;
+        tickCalcSunrise();
+    }
 }
 
 //-----------------------------------------------------------------------------
@@ -236,10 +241,8 @@ void app::updateNtp(void) {
         }
     }
 
-    if ((0 == mSunrise) && (0.0 != mConfig->sun.lat) && (0.0 != mConfig->sun.lon)) {
-        mCalculatedTimezoneOffset = (int8_t)((mConfig->sun.lon >= 0 ? mConfig->sun.lon + 7.5 : mConfig->sun.lon - 7.5) / 15) * 3600;
-        tickCalcSunrise();
-    }
+    if(mNtpReceived)
+        onNtpUpdate(true);
 
     mMqttReconnect = false;
 }
diff --git a/src/config/settings.h b/src/config/settings.h
index fe0053a9..e115160b 100644
--- a/src/config/settings.h
+++ b/src/config/settings.h
@@ -427,8 +427,8 @@ class settings {
             mCfg.ntp.port = DEF_NTP_PORT;
             mCfg.ntp.interval = 720;
 
-            mCfg.sun.lat         = 0.0;
-            mCfg.sun.lon         = 0.0;
+            mCfg.sun.lat         = 51.1; // mid of Germany
+            mCfg.sun.lon         = 10.5; // mid of Germany
             mCfg.sun.offsetSecMorning = 0;
             mCfg.sun.offsetSecEvening = 0;
 
diff --git a/src/defines.h b/src/defines.h
index 9078730f..16a1adf9 100644
--- a/src/defines.h
+++ b/src/defines.h
@@ -13,7 +13,7 @@
 //-------------------------------------
 #define VERSION_MAJOR       0
 #define VERSION_MINOR       8
-#define VERSION_PATCH       96
+#define VERSION_PATCH       97
 
 //-------------------------------------
 typedef struct {