code: function(file, t) {
  		var self = this, 
  			ts   = t || file.ts, 
  			i18  = self.i18,
  			date, format, output, d, dw, m, y, h, g, i, s;
  
  		if (self.options.clientFormatDate && ts > 0) {
  
  			date = new Date(ts*1000);
  			format = ts >= this.yesterday 
  				? this.fancyFormat 
  				: this.dateFormat;
  
  			output = self.date(format, date);
  			
  			return ts >= this.yesterday
  				? output.replace('$1', this.i18n(ts >= this.today ? 'Today' : 'Yesterday'))
  				: output;
  		} else if (file.date) {
  			return file.date.replace(/([a-z]+)\s/i, function(a1, a2) { return self.i18n(a2)+' '; });
  		}
  		
  		return self.i18n('dateUnknown');
  	}
docs: Return localized date
  
  @param  Object  file object
  @return String