Calender date issue

### Issue type

**I'm submitting a ...** (check one with "x")

* [x] bug report
* [ ] feature request
* [ ] question about the decisions made in the repository

### Issue description

**Current behavior:**
In Extra Component->calender
I am trying to get date on Onsubmit which will provide the date from the HTML when selecting a data from datepicker.
Issue is date is one date back.
if i select Jan 31st in component i get jan 30("date1":"2019-01-30T18:30:00.000Z").

**Expected behavior:**
it should show selected date.

**Steps to reproduce:**

**Related code:**

.html page below

Save

.component page as below

onSubmit(group:any):void{
alert(JSON.stringify(group));
}

### Other information:
node --version=v10.0.0
npm --version=6.7.0
OS : ubuntu 16.04
Browser : Firefox