i hope this does work

lua/sca_main.lua

@@ -34,13 +34,14 @@ local function sca_setup_timezone()
         year = year + 1
     end
 
-    for (month, 11, 1) do
+    for i = 0, 11, 1 do
        if (daysPastUnixYear - daysPerMonth[i] >= daysPerMonth[i]) then
             if (i == 2 && (year % 4 == 0 && (year % 400 == 0 && year % 100 != 0))) then
                 daysPastUnixYear = daysPastUnixYear - (daysPerMonth[i] + 1)
             else
                 daysPastUnixYear = daysPastUnixYear - daysPerMonth[i]
             end
+            month = month + 1
         else
             day = daysPastUnixYear - 1
             break
@@ -49,15 +50,28 @@ local function sca_setup_timezone()
     
     local hourInSeconds = time % 86400
     
-    if (month >= 2 && month <= 9) then
+    if (month > 2 && month < 9) then  
-    // Summer time    
+        summerTime = true 
-    
+    elseif (month == 2) then
+        // If its less than 6 days until end of the month (aka last Weekday in the month) and its sunday and its 3 am or later....
+        if ((daysPerMonth[month] - day <= 6) && weekDay == 3 && hoursInSeconds >= 10800) then
+            summerTime = true
+        else
+            summerTime = false
+        end
+    elseif (month == 9) then
+        // The same action again but for winter time
+        if ((daysPerMonth[month] - day <= 6) && weekDay == 3 && hoursInSeconds >= 10800) then
+            summerTime = false
+        else
+            summerTime = true
+        end
     else
-    // Winter time
+        summerTime = false
-
     end
 end
 
+// Odd... Windows returns timezoned os.time, hmmm.... Need to check it on Linux
 local function sca_msg_to_player(time)
     if (msg[time] != nil) then
         for k, v in ipairs(player.GetHumans()) do

lua/sca_msg.lua

@@ -1,6 +1,6 @@
 local conf = {
 
-    [71880] = '"Dies ist ein test Text!"'
+    [85200] = '"Dies ist ein test Text!"'
 
 }