This is the easiest way you can:

    var thisDate = ISODate("2016-01-07T00:00:00Z");

    Model.find({
        startDate: {
            '$lte': thisDate
        },
        endDate: {
            '$gte': thisDate
        }
    });

It will return all docs (in array) in which `startDate` greater than or equals to `thisDate` and `endDate` less than or equals to `thisDate`

For `counts` use `.length()` on your received collection which is array so .length() will return you count easily..

Hope this helps.

Cheers,