I was trying to use z or zz in format to display the timezone at the end of the string and found that it\'s deprecated. Z and ZZ
As of moment-timezone 0.1.0, you can use the formatting additions to get the abbreviation of a specific time zone:
moment().tz("America/Los_Angeles").format('z'); // PST or PDT
As of version 0.5.0, you can now guess the user's local time zone, which when combined with the above technique, allows you to do the following:
moment().tz(moment.tz.guess()).format('z');
Assuming the guess was correct, it will display the associated abbreviation.