node.js - How to change timezone in heroku nodejs dashboard? -

i wondering if of had experience in changing timezone in heroku dashboard. have heard there 2 methods. setting 1 of config vars(in settings) tz like:

key:

tz 

argument:

"america/los_angeles" 

or putting in nodejs script:

proccess.env.tz = "america/los_angeles" 

is there should doing different change app's time in heroku and/or nodejs?

thank much!

the 2 alternatives said same, setting on different place (heroku config vars on first case, , code on second), question how change on heroku dashboard, i'd go first answer.

the thing should different, argument heroku config vars, should without quotes