Javascript gives different timezone on the same machine

Question

The google chrome console is returning different timezones if I initialize the Date with a parameter or not.

In another machine the same code give me the right result:

It's weird but it's happening

Answer 1

I assume is Daylight Savings Time (DTS).

As it seems from the logs, the computers are not in the same location, and it seems that in Brazil, DTS is adopted regionally , applicable at the beginning of November.

A quick way to test if this is true, try creating an October date instead of November.