Does your clock match your location? Our timezone dissonance test detects if your VPN or Proxy is leaking your true identity through your system time settings.
AI Overview
Timezone Dissonance happens when your IP address says you are in one country, but your browser clock says another. This is a major red flag for banks and websites because it proves you are using a VPN or proxy. Aligning your system time with your IP location is critical for remote work and account security.
Comparing network and system time...
IP Timezone
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Browser Time
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Offset Diff
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Result
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[Temporal Forensic Log]
Timezone Dissonance occurs when your internet location and your computer's clock do not match. When you use a VPN, your IP address might show you are in the USA, but your browser's JavaScript still sees your real system clock in London or Karachi. Websites detect this instantly to identify "suspicious" users.
Fact: 90% of basic VPNs do not change your system clock. This mismatch is a primary signal used by Netflix, banks, and anti-bot systems to block proxy traffic.
Websites use a JavaScript command called Intl.DateTimeFormat. This command reads the time zone directly from your Operating System (Windows or macOS). Since your VPN only changes your network layer, the browser still knows your real local time. They then compare this to your IP Geolocation to find a mismatch.
If our timezone dissonance test shows a mismatch, you can fix it using these steps on ZKB Tracking:
Intl API to match your proxy location.Does Incognito mode hide my timezone?
No. Incognito mode only clears your history; it does not block websites from reading your system clock via JavaScript.
Is a 1-hour difference a risk?
Usually no. Minor mismatches (under 2 hours) are often ignored as Daylight Saving Time (DST) errors. Differences over 3 hours are highly suspicious.
How accurate is IP-based time?
It is very accurate. Databases track the IANA timezone assigned to every city and IP range globally.