anchor.diff:          return;
   
         } else if (this.currentBaseLayer === 'fires') {
  +        var current_date = new Date(),
  +            current_hour = current_date.getUTCHours();
           if (this.baseLayer) {
  -          this.baseLayer.setOptions({ opacity: 1 });
  +          this.baseLayer.setOptions({ opacity: 1 , extra_params: { v: this.global_version, hour: current_hour }});
           } else {
             this.baseLayer = new CartoDBLayer({
               map: map,
  
positive.code:             featureOut: function() { map.setOptions({ draggableCursor: 'default' }); },
              auto_bound: false
            });
  
            subscribe('timeline:change_date_fires', _.bind(function(end_day, options) {
              var year  = end_day.getUTCFullYear(),
                  month = (end_day.getUTCMonth() + 1) < 10 ? '0' + parseInt(end_day.getUTCMonth() + 1, 10) : parseInt(end_day.getUTCMonth(), 10),
                  day   = end_day.getUTCDate() < 10 ? '0' + end_day.getUTCDate() : end_day.getUTCDate();
              var query = [
                "SELECT * FROM global_7d where acq_date > '" + year + "-" + month + "-" + day + "'"
              ].join(' ');
  
              this.baseLayer.setQuery(query);
            }, this));
          }
  
negative.code:             tiler_domain: 'dyynnn89u7nkm.cloudfront.net',
              sql_domain: 'dyynnn89u7nkm.cloudfront.net',
              tiler_path: '/tiles/',
              extra_params: { v: this.global_version, hour: current_hour }, // define a verison number on requests
              tiler_suffix: '.png',
              table_name: this._getTableName(this.currentBaseLayer),
              query: 'SELECT * FROM global_7d',
  