var startTime="2018-11-13 00:00:00";
var time2 = Date.parse(new Date(startTime));
    time2 = time2 / 1000;
    console.log(time2)

var endTime="2018-11-18 00:00:00";
var time3 = Date.parse(new Date(endTime));
    time3 = time3 / 1000;
    console.log(time3)
    

pm.test("Response time is less than endtime", function () {
    var jsonData = pm.response.json();
    var responsetime = jsonData.data.list[1].createTime;
    responsetime = Date.parse(new Date(responsetime));
    responsetime = responsetime / 1000;
    pm.expect(responsetime).to.be.below(time3);
    
});

var jsonData = pm.response.json();
    var responsetime = jsonData.data.list[1].createTime;
    responsetime = Date.parse(new Date(responsetime));
    responsetime = responsetime / 1000;

tests['respontime large starttime'] = responsetime > time2;