Pretty time zone:
+2
or-9:30
$ npm install time-zone
import timeZone from 'time-zone';
// Current time zone (in Norway)
timeZone();
//=> '+2'
// Time zone in February (in Norway)
timeZone(new Date(2016, 1, 1));
//=> '+1'
// Current time zone (in French Polynesia)
timeZone();
//=> '-9:30'
Type: Date
Default: new Date()
Custom date.