If you’re experiencing date and time issues in Windows after dual-booting with Ubuntu, the problem is likely due to how each operating system handles the system clock.
Why This Happens?
• Ubuntu (Linux): Uses UTC (Coordinated Universal Time) by default.
• Windows: Uses local time by default.
• This difference causes time mismatches when switching between OSes.
Solution 1: Make Windows Use UTC (Recommended)
1. Open Command Prompt (Admin):
• Press Win + X → Click Command Prompt (Admin) (or PowerShell)
2. Run the following command to enable UTC time in Windows:
reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\TimeZoneInformation" /v RealTimeIsUniversal /t REG_DWORD /d 1 /f3. Restart your computer and check if the time issue is resolved.
Solution 2: Make Ubuntu Use Local Time
If you prefer keeping Windows settings unchanged, you can configure Ubuntu to use local time instead:
1. Boot into Ubuntu.
2. Open a terminal and run:
timedatectl set-local-rtc 1 --adjust-system-clock
3. Verify the change:
timedatectl
It should show:
RTC in local TZ: yes
4. Restart your system and check if the time issue is resolved.
