Backendless.ServerCode.addTimer({

        //...

    execute(req) {
        logger.info("started timer");

        var PlaceStore = Backendless.Data.of("Place");
        var placeDataQuery = new Backendless.DataQuery();

        return PlaceStore.find(placeDataQuery).then(
            places => {
            logger.info("places: " + places.data.length);

            return Promise.all(places.data.map(place => {
                logger.info("in loop: " + place.objectId);

                return findAllPlaceHits(place.objectId).then(hits => {
                    logger.info("hits: " + hits.data.length);

                    //here I believe you need to do something with place and its hits
                    //don't forget to _return_ a new promise from here
                }).catch(function(err) {
                    return Promise.reject('Unable update place hit to true and return new attendance count : ' + err.message)
                });
            }));
          },
          error => Promise.reject('Unable to get places : ' + err.message));
    }
});