Network · Browser
What is my timezone?
Your time zone name, today's UTC offset, whether daylight saving time is in effect, and a live clock, read from your device settings.
Your time zone
Details
How to read your result
The time zone name is Intl.DateTimeFormat().resolvedOptions().timeZone, an identifier from the IANA Time Zone Database such as America/Toronto. These names identify a region with one shared clock history, not just today's offset, which is why they are written as Area/Location. The IANA naming rules give one name to every region whose clocks have agreed since 1970. The ECMA-402 standard defines how browsers report it.
The UTC offset is calculated by formatting the current moment in that zone and comparing it with UTC. Daylight saving is worked out the same way: the page compares the zone's offset in January and July of this year. If they differ, the zone observes daylight saving, and it is in effect when today's offset is the larger one. This inference assumes a normal once-a-year clock change. It is a calculation, not a lookup of a government schedule.
Your time zone comes from your device clock settings, not from your IP address, so a VPN does not change it. The raw getTimezoneOffset() value is shown too: it counts minutes the opposite way from the usual convention, so a positive number means west of UTC.
Sources (retrieved October 2026): ECMA-402 Internationalization API; IANA Time Zone Database; IANA tz database theory: naming conventions.
Frequently asked questions
What is my time zone name?
It is the identifier at the top of this page, for example America/Toronto or Europe/London. It is set by your operating system and shared by your browser.
What is my UTC offset right now?
It is the UTC row in the results. It changes by an hour in zones that observe daylight saving, so a zone can have two offsets in one year.
Why does my zone name a city I do not live in?
IANA gives one zone name to every region whose clocks have agreed since 1970, and the name uses a location in that region. Your clocks have followed the same rules as that location, even if you live elsewhere.
Does a VPN change my time zone?
No. The browser reads the time zone from your device. A VPN changes your IP address, not the clock settings. Some privacy settings or extensions can make a browser report a different zone.
Is the daylight saving result always right?
It is right for zones that change their clocks once a year. A few zones have unusual rules, so for a legal deadline check an official time source.
Is anything sent to a server?
No. The page reads your time zone from your browser and does not store or transmit it.
Private by design
This tool reads values from your own browser and shows them on this page. The tool does not store them, send them to TNAADO or pass them to any other service. What your browser reports can be reduced or changed by privacy settings and extensions, so treat it as what the browser says, not as proof.