clarified timezoneOffset setting

src/app/components/settings.js

@@ -24,7 +24,7 @@ function (_, crypto) {
       default_route                 : '/dashboard/file/default.json',
       grafana_index                 : 'grafana-dash',
       elasticsearch_all_disabled    : false,
-      timezoneOffset                : 'auto',
+      timezoneOffset                : null,
     };
 
     // This initializes a new hash on purpose, to avoid adding parameters to
@@ -59,16 +59,6 @@ function (_, crypto) {
       };
     }
 
-    if (settings.timezoneOffset === 'auto' )
-    {
-      //this hack is to deal with graphites poor tz support. It doesn't like
-      // DST, so we're gonna make a january (non-dst) date and get its offset
-      var nonDSTDate = new Date(new Date().getFullYear(),0,1);
-
-      //given "Tue Apr 08 2014 08:24:50 GMT-0400 (EDT)", get "-0400"
-      settings.timezoneOffset = nonDSTDate.toString().split(' ')[5].substring(3);
-    }
-
     _.each(settings.datasources, function(datasource, key) {
       datasource.name = key;
       parseBasicAuth(datasource);

src/config.sample.js

@@ -36,10 +36,16 @@ function (Settings) {
     default_route: '/dashboard/file/default.json',
 
     /**
-     * If your graphite server has another timezone than you & users browsers specify the offset here
-     * Example: "-0500" (for UTC - 5 hours)
-     * If your graphite server runs UTC, you can set this to "auto" and it will pick the right timezone for you
+     * If you experiance problems with zoom, it is probably caused by timezone diff between
+     * your browser and the graphite-web application. timezoneOffset setting can be used to have Grafana
+     * translate absolute time ranges to the graphite-web timezone.
+     * Example:
+     *   If TIME_ZONE in graphite-web config file local_settings.py is set to America/New_York, then set
+     *   timezoneOffset to "-0500" (for UTC - 5 hours)
+     * Example:
+     *   If TIME_ZONE is set to UTC, set this to "0000"
      */
+
     timezoneOffset: null,
 
     grafana_index: "grafana-dash",