diff --git a/README.md b/README.md
index 32b23ee..a682559 100644
--- a/README.md
+++ b/README.md
@@ -363,7 +363,10 @@ All actions also include a:
 `msg._sessionid` property that indicates which client session they came from. Any msg sent out that includes this property will ONLY be sent to that session - so you can target map updates to specific sessions if required.
 `msg._sessionip` property that shows the ip of the client that is connected to the session.
 
-The "connected" action also include a `msg._clientheaders` property that shows the headers sent by the client to make a connection to the session.
+The "connected" action additionally includes a:
+`msg.payload.parameters` property object that lists the parameters sent in the url.
+`msg.payload.clientTimezone` property string showing the clients local Timezone. Returns bool of `false` if unable to retrive clients local Timezone.
+`msg._clientheaders` property that shows the headers sent by the client to make a connection to the session.
 
 
 ### Utility functions
diff --git a/worldmap/worldmap.js b/worldmap/worldmap.js
index 59bc933..1f00678 100644
--- a/worldmap/worldmap.js
+++ b/worldmap/worldmap.js
@@ -63,7 +63,7 @@ var connect = function() {
         if (!inIframe) {
             document.getElementById("footer").innerHTML = "<font color='#494'>"+pagefoot+"</font>";
         }
-        ws.send(JSON.stringify({action:"connected",parameters:Object.fromEntries((new URL(location)).searchParams)}));
+        ws.send(JSON.stringify({action:"connected",parameters:Object.fromEntries((new URL(location)).searchParams),clientTimezone:Intl.DateTimeFormat().resolvedOptions().timeZone || false}));
         onoffline();
     };
     ws.onclose = function() {