Do not apply timezone for minute an hour aggregations

lib/cartodb/models/dataview/histogram.js

@@ -403,14 +403,14 @@ Histogram.prototype._buildDateHistogramQuery = function (psql, override, callbac
             _aggregation: _aggregation,
             _start: getBinStart(override),
             _end: getBinEnd(override),
-            _timezone: getTimezone(_timezone)
+            _timezone: getTimezone(_timezone, _aggregation)
         });
     } else {
         dateBasicsQuery = dateBasicsQueryTpl({
             _query: _query,
             _column: _column,
             _aggregation: _aggregation,
-            _timezone: getTimezone(_timezone)
+            _timezone: getTimezone(_timezone, _aggregation)
         });
     }
 
@@ -429,7 +429,7 @@ Histogram.prototype._buildDateHistogramQuery = function (psql, override, callbac
         _query: _query,
         _column: _column,
         _aggregation: _aggregation,
-        _timezone: getTimezone(_timezone)
+        _timezone: getTimezone(_timezone, _aggregation)
     });
 
     var histogramSql = [
@@ -551,10 +551,15 @@ function getWidth(override) {
     return width;
 }
 
-function getTimezone(timezone) {
+function getTimezone(timezone, aggregation) {
     if (!timezone) {
         return '0';
     }
+
+    if (aggregation === 'hour' || aggregation === 'minute') {
+        return '0';
+    }
+
     var timezoneInHours = Math.ceil(timezone / 3600);
     return '' + timezoneInHours;
 }