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I have an app, where I get Time Zone from PC.
var d = new Date()
var n = d.getTimezoneOffset();
In my situation, it returns 180, I believe it is -3 Hours (180 / 3). Thus, I have doubts about which is the largest Timezone and which is the smallest. On a site I saw specifying -12 and +14 (720 and -840). Someone can confirm me this data because I need to validate a Timezone field.