Creating calendar syncronised to spreadsheet but all events are created onn 1 Jan 1970 at 03:00. What did I miss?

Question

I am following the conversation and tutorial in post Create Google Calendar Events from Spreadsheet but prevent duplicates

But I cannot get the final solution to work. It fills my calendar but all dates are 1/1/1970 at 3 am.

The code is as follows:

function onOpen() {
    var sheet = SpreadsheetApp.getActiveSpreadsheet();
    var entries = [{
        name: "Export Events",
        functionName: "exportEvents"
    }];
    sheet.addMenu("Calendar Actions", entries);
};

function parseDate(s) {
    var months = {
        jan: 0, feb: 1, mar: 2, apr: 3, may: 4, jun: 5, jul: 6, aug: 7, sep: 8, oct: 9, nov: 10, dec: 11
    };
    var p = s.replace(".", "").split('-');
    return new Date(p[2], p[1], p[0]);
}

/**
 * Export events from spreadsheet to calendar
 */
function exportEvents() {
    var sheet = SpreadsheetApp.getActiveSheet();

    var headerRows = 1; // Number of rows of header info (to skip)
    var range = sheet.getDataRange();
    var data = range.getDisplayValues();
    var calId = "the calendar"; // PRODUCTION
    //var calId = "the calendar; // TEST
    var cal = CalendarApp.getCalendarById(calId);
    //Logger.log(cal);
    //Logger.log(data.length);
    for (i = 0; i<data.length; i++) {
        if (i<headerRows) continue; // Skip header row(s)
        if (data[i][0].length<1) continue; // Skip if no content.

        var row = data[i];
        Logger.log(row);
        var date = parseDate(row[0]); // First column
        //Logger.log(date);
        var title = row[1]; // Second column

        var tstart = new Date();
        var s = row[2].split(":");
        tstart.setHours(s[0]);
        tstart.setMinutes(s[1]);
        tstart.setSeconds(s[2]);
        tstart.setDate(date.getDate());
        tstart.setMonth(date.getMonth());
        tstart.setYear(date.getYear());

        var tstop = new Date();
        var e = row[3].split(":");
        tstop.setHours(e[0]);
        tstop.setMinutes(e[1]);
        tstop.setSeconds(e[2]);

        tstop.setDate(date.getDate());
        tstop.setMonth(date.getMonth());
        tstop.setYear(date.getYear());
        var loc = row[4];
        var desc = row[5];
        var id = row[6]; // Sixth column == eventId
        // Check if event already exists, update it if it does
        var event = null;
        if (id.length > 0) {
            try {
                event = cal.getEventSeriesById(id);
            } catch (e) {
                // do nothing - we just want to avoid the exception when event doesn't            exist
            }
        }
        if (!event) {
            //cal.createEvent(title, new Date("March 3, 2010 08:00:00"), new Date("March 3, 2010 09:00:00"), {description:desc,location:loc});
            var newEvent = cal.createEvent(title, tstart, tstop, {
                description: desc, location: loc
            }).getId();
            var r = i + 1;
            var cell = sheet.getRange("G" + r);
            cell.setValue(newEvent);
        } else {
            Logger.log(event);
            event.setTitle(title);
            event.setDescription(desc);
            event.setLocation(loc);
            // event.setTime(tstart, tstop); // cannot setTime on eventSeries.
            // ... but we CAN set recurrence!
            var recurrence = CalendarApp.newRecurrence().addDailyRule().times(1);
            event.setRecurrence(recurrence, tstart, tstop);
        }
        debugger;
    }
}

I think I must be making an obvious rookie mistake but cannot figure it out. Any chance of some help?

BTW: my dates are formatted: 12/01/2019 and times formatted: 18:00:00.