EOV TimeZone Switcher

EOV TimeZone Switcher changes the Windows time zone from the tray in two clicks — and puts it back just as fast. Landed in Rome with no internet and the laptop still shows another country's time? Right-click the icon by the clock, pick "Rome", done. Building software and want to see how it shows dates in New York and Tokyo? Switch, check, switch back.

Everything from the menu by the clock

The program lives in the tray. Right-click the icon and the menu shows what is set now and, below it, your favorite cities, each with its current time and UTC offset. Click a city and Windows switches to its zone at once. "Other city…" and "Restore" are right there too. A left click opens the window, but you do not need it to change the zone.

Favorite cities with live clocks

In the window your favorites are cards: city, live clock, offset and country. The active city has a frame. When a city has already moved into the next day, a "tomorrow" mark appears under its clock. Cards can be reordered and removed, and their order is also the order in the tray menu.

A hundred cities and a forgiving search

The catalog has more than a hundred cities across Europe, the US and Canada, Asia and the Middle East, Africa, Australia and South America. You can search in English or Russian, by city, by country and by nearby resorts: "hurghada" finds Cairo, "phuket" finds Bangkok. Case does not matter. If no city fits, matches from the full list of Windows time zones appear below.

Restore with one button

Before the first change the program remembers how things were: the zone, daylight saving and the automatic time zone setting. It remembers once: Moscow → Rome → Tokyo, and home is still Moscow. It survives a reboot. While the zone is changed, the window shows a Home bar with a Restore button and the tray icon carries a yellow dot. Go back to your home zone by hand and the program notices and drops the bar.

Windows automatic time zone, under control

Windows has a "Set time zone automatically" switch. With internet it may override your manual choice; without internet it does nothing useful at all. While it is on, the program warns you and lets you turn it off with one button. If it was on before the first change, Restore turns it back on.

Made for testing

Handy for checking how software behaves in other zones: offsets that are not whole hours (Kathmandu, New Delhi, Tehran), different dates (Auckland and Honolulu), daylight saving moving in opposite directions (New York and Sydney). The window reminds you of the classic trap: browsers, .NET and Python programs often read the time zone once at startup, so restart them after switching.

No admin rights, no internet

Windows lets a regular user change the time zone, so the program needs no administrator rights. The UAC prompt appears only when you turn the automatic time zone on or off. The program never goes online. Card clocks are computed from Windows' own time zone tables, so they match what the system clock shows after the switch.

What it does not do

• it does not change the time itself, only the time zone; if the clock has drifted by minutes, Windows time sync fixes that;
• it does not detect your location or switch zones on its own — only when you click;
• it does not touch date formats, language or regional settings;
• it cannot make an already running program pick up the new zone — that program has to be restarted;
• it never goes online — no updates, no statistics.

At a glance

• System: Windows 10 and 11
• Format: a folder with an exe, no installation
• Size: 34.4 MB archive, 86.7 MB unpacked
• Languages: English and Russian, switched on the fly
• Administrator rights: not needed; asked for only when you switch the automatic time zone
• Network: not used at all
• License: free
• Included: an illustrated manual in two languages, opens with F1 and works offline