Ionic date, Select month in TS file form date picker

Ionic Framework ionic-v3
1

I’m trying to get month from localStorage, which i have saved in some other page. I want to compare months.

<ion-datetime displayFormat="DD/MMM/YY" [(ngModel)]="date"></ion-datetime>

localStorage.setItem('date'+this.index, data);

This is how I’m getting date.

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let data = localStorage.getItem('date' + this.index);
    let data1 = JSON.parse(data)
    for(let value of data1){
      console.log(value.date)
    }

Console Value:

2019-11-17 

2019-11-16

I want to select the month from this. Is this possible in ionic, or i have to use moment.js

Thank you.