How to make a timer in ionic

import {
  Component
} from '@angular/core';
import {
  IonicPage,
  NavController,
  LoadingController,
  Loading
} from 'ionic-angular';
import {
  Geolocation,
  Geoposition
} from '@ionic-native/geolocation';

declare
var google;

@IonicPage()
@Component({
  selector: 'page-home',
  templateUrl: 'home.html'
})
export class HomePage {
  map: any;
  loading: Loading;


  constructor(
    private navCtrl: NavController,
    private geolocation: Geolocation,
    private loadCtrl: LoadingController


  ) {}

  ionViewDidLoad() {
    this.loading = this.loadCtrl.create();
    this.loading.present();
    this.getPosition();
  }

  getPosition(): void {
    this.geolocation.getCurrentPosition()
      .then(response => {
        this.loadMap(response);
      })
      .catch(error => {
        console.log(error);
        this.loading.dismiss();
      })
  }

  loadMap(position: Geoposition) {
    let Mytimwer = setTimeout(0);
    console.log("Mytimwer es  " + Mytimwer);

    let latitude = position.coords.latitude;
    let longitude = position.coords.longitude;
    console.log(latitude, longitude);

    // create a new map by passing HTMLElement
    let mapEle: HTMLElement = document.getElementById('map');

    // create LatLng object
    let myLatLng = {
      lat: latitude,
      lng: longitude
    };
    let myLatLng1 = {
      lat: 4.572102,
      lng: -74.151282
    }; // lo quiiero es cambiar  la cordena atravez de tiempo  , 
    // create map
    this.map = new google.maps.Map(mapEle, {
      center: myLatLng,
      zoom: 12
    });


    google.maps.event.addListenerOnce(this.map, 'idle', () => {
      this.loading.dismiss();


      let marker = new google.maps.Marker({
        position: myLatLng, //4.572102, -74.151282
        map: this.map,
        title: 'Usted esta Aqui!',
        //icon: 'https://cdn4.iconfinder.com/data/icons/aiga-symbol-signs/630/aiga_bus_on_grn_circle-24.png' 
        icon: 'https://cdn0.iconfinder.com/data/icons/octicons/1024/person-32.png'

      });

      let marker1 = new google.maps.Marker({
        position: myLatLng1, //4.572102, -74.151282
        map: this.map,
        title: 'alimentador 6-1',
        icon: 'https://cdn4.iconfinder.com/data/icons/aiga-symbol-signs/630/aiga_bus_on_grn_circle-24.png'
        // icon: 'https://cdn0.iconfinder.com/data/icons/octicons/1024/person-32.png'

      });
      mapEle.classList.add('show-map');
    });
  }
}