Timezone doesn't apply

Versions

"ember-cli": "2.6.2",
"ember-moment": "4.1.0",

My `template.hbs` has a code below but doesn't show the correct date based on the timeZone defined on addon

{{moment-format model.createdAt "MMM DD, YYYY · LT" timeZone="Singapore"}}

on my `config/environment.js` I also included the code below

moment: {
includeTimezone: 'all'
},

Any response is much appreciated, thank you