figures out the date for next sunday, and then runs the counter off of that.

next_sunday_counter.html

<script language="javascript" type="text/javascript">
function nextSunday(){
    var d = new Date(),
        day = 86400000;

    var dayMult = 0,
        currDay = d.getDay();

    if (currDay < 1) {
        // it's sunday
        
        // is it past 8:55am?
        if (d.getHours() > 8 || (d.getHours() == 8 && d.getMinutes() >= 55)) {
            //we need to look for next sunday
            dayMult = 7
        } else {
            dayMult = 1
        }
    } else {
        dayMult = 7 - currDay;
    }

    d.setHours(8);
    d.setMinutes(55);
    var realDate = new Date(d.getTime() + (day * dayMult));

    return {
        day: realDate.getUTCDate(),
        month: realDate.getUTCMonth() + 1,
        year: realDate.getUTCFullYear(),
        hour: 12 + (-(realDate.getTimezoneOffset()/60)),
        min: 55,
        sec: 0
    }

}
function counter(el){
    var self = $(el),
        _el = el,
        d = nextSunday();
    self.countDown({
        targetDate: {
            'day':      d.day,
            'month':    d.month,
            'year':     d.year,
            'hour':     d.hour,
            'min':      d.min,
            'sec':      d.sec
        },
        // onComplete function
        onComplete: function() { 
            self.stopCountDown();
            counter(_el);
        }

    });
}
jQuery(document).ready(function() {
    counter("#countdown_dashboard");
});
</script>