Timezone spoofing

A site reads your zone in one line and reads it next to the country of your address. When those two answers disagree, the visit stops looking like a person in a chair and starts looking like a rented machine.

Timezone spoofing is making a browser report the clock of the country its address belongs to instead of its own.

How a site reads your clock

One line of script returns the zone name and a second returns the offset. Neither asks your permission, and both are answered on the first page you open.

1
Asks for the zone name
The browser answers with an entry from the world zone table, such as Europe/Berlin.
2
Asks for the offset
The answer is a number of minutes, and it moves with daylight saving.
3
Reads it against the address
The country of the address is known to the site already, and the clock is judged next to it.

Your clock right now

These are read in your browser on this page and sent nowhere. A site is answered the same way, without asking you anything.

Perangkat Anda, saat ini

Time zone: mengukur di perangkat Anda
Offset from UTC: mengukur di perangkat Anda
Language list: mengukur di perangkat Anda
Platform: mengukur di perangkat Anda

Dibaca di peramban Anda dan ditampilkan di sini. Tidak ada yang dikirim ke mana pun.

Where a profile's clock comes from

A profile does not take the clock of your computer. The country it leaves through is asked through the proxy itself over a protected connection, and the clock and the language list follow that answer.

Several providers are asked in turn, because one free endpoint starts refusing during a bulk launch and one refusal must not decide an identity. When none of them answers, the country is not invented: the profile opens with the zone from its own seed and the app says the exit country is unknown.

What the shipping build answers

The self-test asks a running profile the same questions a site would. This run is the build shipping today, behind a Ukrainian address.

The world table renamed that zone, and the browser answers with the older canonical name. Real Chrome answers the same way, so agreeing with it is the correct behaviour rather than a miss.

Reading	What the profile answered
Time zone	Europe/Kiev for the requested Europe/Kyiv
Primary language	uk-UA
Language list	uk-UA, uk, ru, en

Often confused with

IP geolocation
What your address says about your country. It is the value your clock is compared against, not the clock itself.
The offset alone
An offset is a number many countries share. The zone name carries the daylight saving history as well, and both are read together.
The language list
It travels with the country of the address in the same step. A German clock next to a Japanese language list is the same kind of contradiction.

What this does not do

It does not follow the city of an address. The clock comes from the exit country, and a country can hold several zones, so a profile in one city may carry the clock of another.
It does not invent a country. With no answer from any provider, the profile opens on the zone from its own seed and the app tells you the exit country is unknown.
It does not move the clock of your computer. The zone belongs to the profile, and everything else on the machine keeps the hour it had.
It does not undo a link that already exists. Two accounts opened from one profile stay linked whatever the clock says afterwards.

Check it

Every answer above comes from a file you can open.

Where the exit country is asked, and how each answer is read: apps/desktop/src/lib/exitGeo.js
Recorded provider answers, run on every build: apps/desktop/test/exit-geo.js · apps/desktop/test/fingerprint-consistency.js
The clock and the language list read back inside a profile: apps/desktop/src/lib/fpAudit.js
The answers in the table above: engine/приёмка-отчёт.json

Questions

Does a VPN change my timezone?: No. A VPN changes the address your traffic comes from, and the clock stays with your machine. That gap between the two is exactly what a check looks for.
Is the offset enough to match?: No. The zone name, the offset and the daylight saving dates are read together, and a country is recognised by all three.
Can I pick the zone by hand?: Yes. A zone you choose wins over the generated one, and the language list moves to the country of that zone so the pair still agrees.
What happens when I change the proxy?: The remembered exit country is dropped with the old address, and the next launch asks again through the new one.
Where do I see mine?: The panel above shows it for the browser you are reading this in. The fingerprint check reads the same zone next to the rest of what a site gets.

Next to this

See what your own profile answers

The self-test runs inside a profile and shows all 29 measurements, green and red alike.

Download ARMANOS A proxy per profile