How to Change the Date & Time Format on Windows 11/10

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Windows shows the date and time in a “format” (like DD/MM/YYYY vs MM/DD/YYYY, or 12-hour vs 24-hour time). Sometimes that format is perfect—until you install a new Windows update, switch regions, share a PC with someone else, or use apps that expect a specific style.

Then suddenly you’re staring at confusing timestamps, wrong separators, or a clock that feels “off” for your country.

The good news: Windows gives you multiple ways to change how date and time appear—ranging from quick built-in settings (best for most users) to advanced customization (great if you want exact control like “17 Feb 2026, 09:30 PM” or “2026-02-17 21:30”). And you can do it without changing your actual time zone or system clock.

In this guide, you’ll learn every working method to change date & time format on Windows 11 and Windows 10, with step-by-step instructions and examples.

What “Date & Time Format” Means in Windows

Windows formatting typically comes from:

  • Regional format (Country/Region)

  • Regional date/time patterns (Short date, Long date, Short time, Long time)

  • Calendar settings (rarely needed)

  • Language/region overrides (optional)

You can change just the display format without changing your time zone or clock accuracy.

Method 1: Change Date & Time Format from Windows Settings (Recommended)

This is the easiest and safest method.

On Windows 11

  1. Press Windows + I to open Settings.

  2. Go to Time & language → Language & region.

  3. Scroll to Region.

  4. Find Regional format.

  5. Click the dropdown and choose a format like:

    • English (India) (often DD/MM/YYYY)

    • English (United States) (often MM/DD/YYYY)

    • English (United Kingdom) (often DD/MM/YYYY)

✅ This instantly changes how date/time appears in the taskbar and many apps.

On Windows 10

  1. Press Windows + I → Settings.

  2. Go to Time & Language → Region.

  3. Under Regional format, choose the format you want.

Tip: If you only want a small tweak (like switching 12-hour to 24-hour), use Method 2 below.

Method 2: Change Short Date / Long Date / Time Patterns (Exact Control)

This method lets you directly change:

  • Short date (taskbar/date picker uses this most)

  • Long date (full date style in some places)

  • Short time (taskbar clock style)

  • Long time (includes seconds in some contexts)

Windows 11 / Windows 10 (Same steps)

  1. Press Windows + R, type: control, then press Enter.

  2. Open Clock and Region.

  3. Click Region.

  4. In the Formats tab, click Additional settings…

  5. Open the Date tab:

    • Change Short date

    • Change Long date

  6. Open the Time tab:

    • Change Short time

    • Change Long time

  7. Click Apply → OK → OK.

Common format examples you can use

Short date examples

  • dd-MM-yyyy → 17-02-2026

  • dd/MM/yyyy → 17/02/2026

  • MM/dd/yyyy → 02/17/2026

  • yyyy-MM-dd → 2026-02-17 (ISO style)

Time examples

  • h:mm tt → 9:30 PM (12-hour)

  • HH:mm → 21:30 (24-hour)

  • HH:mm:ss → 21:30:45 (24-hour with seconds)

If you don’t see seconds on the taskbar, that’s normal—Windows often hides them by default even if long time includes seconds.

Method 3: Switch Between 12-Hour and 24-Hour Time (Fast)

If your main goal is just 12-hour vs 24-hour:

  1. Open Control Panel (Windows + R → control).

  2. Go to Clock and Region → Region.

  3. Click Additional settings…

  4. Go to Time tab.

  5. Set:

    • Short time to HH:mm (24-hour)

    • or h:mm tt (12-hour)

  6. Click Apply → OK.

Quick rule

  • H / HH = 24-hour time

  • h / hh + tt = 12-hour time with AM/PM

Method 4: Change Date Separator ( / vs – vs . ) and Month Style

Want 17/02/2026 to become 17-02-2026?

  1. Open Control Panel → Region.

  2. Formats tab → Additional settings…

  3. Date tab → change Short date:

    • Replace / with - or .

  4. Click Apply.

You can also choose:

  • dd-MMM-yyyy → 17-Feb-2026

  • MMM dd, yyyy → Feb 17, 2026

Method 5: Change the “First Day of Week” (Monday vs Sunday)

This affects calendar views in Windows and many apps.

  1. Open Control Panel → Region.

  2. Formats tab → Additional settings…

  3. Go to the Date tab.

  4. Change First day of week (if available).

  5. Click Apply.

Method 6: Change Format Using Windows Registry (Advanced)

Use this only if Settings/Control Panel isn’t applying correctly (or you’re managing multiple PCs). Registry edits can break things if done wrong—be careful.

Steps

  1. Press Windows + R, type regedit, press Enter.

  2. Go to:
    HKEY_CURRENT_USER\Control Panel\International

  3. Look for common values like:

    • sShortDate

    • sLongDate

    • sTimeFormat

    • sShortTime

  4. Double-click and edit the value (example):

    • sShortDate = dd-MM-yyyy

  5. Restart File Explorer or sign out/sign in.

Restart Explorer (quick)

  • Press Ctrl + Shift + Esc → Task Manager

  • Find Windows Explorer → Restart

Method 7: Change Region Without Changing Display Language

Sometimes you want Windows in English but date/time like India/UK.

Windows 11

  1. Settings → Time & language → Language & region

  2. Under Region, set:

    • Country or region

    • Regional format

Windows 10

  1. Settings → Time & Language

  2. Adjust Region and Regional format

This keeps your language but changes date/time conventions.

Fix: Changes Not Showing Up? Try These

1) Restart Explorer

  • Task Manager → Windows Explorer → Restart

2) Sign out and sign in

  • Start menu → account icon → Sign out

3) Disable “Use language list to show suggested formats” (if visible)

Sometimes Windows overrides formats based on language preferences.

4) Check if a work/school policy is forcing formats

  • If this is a company laptop, IT policies may lock region formats.

FAQs

Can I change date format without changing the time zone?

Yes. Date/time format and time zone are separate settings.

What’s the best format for international work?

yyyy-MM-dd is the most universal (ISO-style), and avoids confusion between DD/MM and MM/DD.

Why do some apps still show a different format?

Some apps (especially browsers, spreadsheets, or older software) may use their own regional settings or account-level preferences.

Conclusion

Changing the date and time format on Windows 11/10 is simple once you know where to look. For most users, Settings → Language & region → Regional format is enough. If you want full control (custom separators, month names, 24-hour clock), use Control Panel → Region → Additional settings. And if Windows refuses to apply changes, restarting Explorer or adjusting registry values can help.