You're options won't quite work as posted.  Try this instead:

var options = {
    title: 'Silver Bid or Ask - <?php echo $string_for_chart_date; ?>',
    width:680,
    height300,
    chartArea.left: '0px',
    theme: 'maximized',
    lineWidth:1,
    hAxis: {
        viewWindow: {
            min: new Date(<?php echo $year.",".($month+2).",".$day.
",07,15,0"; ?>),
            max: new Date(<?php echo $year.",".($month+1).",".$day.
",20,15,0"; ?>)
        },
        viewWindowMode: 'explicit'
    }
};​​​​​​ 

On Wednesday, September 5, 2012 4:26:22 PM UTC-4, Max wrote:
>
> I'm trying to make it so that my graph displays the remaining time in the 
> day (so it doesn't look like the market is closed). If my data points don't 
> run until the market close, I want the chart to be blank until that time.
>
> I've tried using the following options. Anything I'm missing?
>
>               var data = new google.visualization.DataTable();
>       data.addColumn('datetime', 'Date');
>       data.addColumn('number', 'Bid');              
>
>               var dataView = new google.visualization.DataView(data);
>       dataView.setColumns([{calc: function(data, row) { return 
> data.getFormattedValue(row, 0); }, type:'datetime'}, 1]);
>       // Set chart options
>       var options = {'title':'Silver Bid or Ask - <?php echo 
> $string_for_chart_date; ?>',
>                      'width':680,
>                      'height':300,
>                      'chartArea.left': '0px',
>                      'theme': 'maximized',
>                      'lineWidth':1,
>                      'hAxis.maxValue': new Date(<?php echo 
> $year.",".($month+1).",".$day.",20,15,0"; ?>),
>                      'hAxis.minValue': new Date(<?php echo 
> $year.",".($month+2).",".$day.",07,15,0"; ?>),
>                      'hAxis.viewWindowMode': 'explicit'};
>

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