Export Multiple Google Calendars to Google Sheets

I have several Google Calendars I'm subscribed to, one for each of my sales and logistics team members. I want to grab the events from each calendar for both today and tomorrow and put them into my main Logistics spreadsheet. I'm stuck on the "get all the events" part; I'm pretty sure I can get the right info to the cells I want them to once I've figured this out.

Here's what I have so far, which is my newbie attempt to go through each calendar and grab the events. I'm getting the error that the parameters for CalendarApp.Calendar.getEventsForDay are incorrect.

Exception: The parameters (number) don't match the method signature for CalendarApp.Calendar.getEventsForDay.at calendarGrabTodayTomorrow(Code:85:28)

  var calendars = CalendarApp.getAllCalendars();  var date = new Date();  var dateTom = (date.getDate()+1);    for (var i=0; i < calendars.length; i++) {    var curCal = calendars[i];    var eventsTod = curCal.getEventsForDay(date);    var eventsTom = curCal.getEventsForDay(dateTom);  Logger.log(eventsTod);    Logger.log(eventsTom);}}

Any help on this is greatly appreciated!