use timezone everywhere

src/app/shared/datetz.pipe.ts

@@ -0,0 +1,14 @@
+import { Pipe, PipeTransform } from '@angular/core';
+//import * as moment from 'moment-timezone/builds/moment-timezone-with-data-2012-2022.min';
+import * as moment from 'moment-timezone';
+
+@Pipe({name: 'datetz'})
+export class DateTzPipe implements PipeTransform {
+  constructor() {
+  }
+
+  transform(date: Date, format: string, tz: string): string {
+    let m = moment(date).tz(tz || moment.tz.guess());
+    return m.format(format);
+  }
+}