Working with TimeStamps and Moment.js

I have a script that updates my database every day at 9:30am. I’m using Ember.js for my application and I need to write a function that checks if a timestamp is past 9:30am or not. The feature should always be showing data, so if it is before 9:30am it should show the previous day’s data and if it's after then it should show the current day's data. So essentially the function would return a correct timestamp depending on what time of day it is. I’ve tried this using moment.js but cannot figure it out. Any help would be great.

    payload.forEach(function(value) {
        // console.log("value: ", value );
        var nineThirty = ' 09:30:00';
        // Create date from input value
        var inputDate = moment( value.updated_at ).format('MM/DD/YYYY');
        var date = moment(inputDate + nineThirty);
        console.log("input Date: ", date );
        // var date_add = date.add(9, 'hours');   
        // console.log("input: ", date_add );

        // yesterday
        var yesterdayDate = moment().subtract(1, 'days');
        var YD = moment( yesterdayDate ).format('MM/DD/YYYY');
        var yesterday = moment(YD + nineThirty );
        console.log("here: ", yesterday );

        //... than something
    });