Hello,

I'm troubleshooting a strange issue on two Dell Windows systems with nearly identical configurations.

Both machines:

• Use Windows 11
• Have automatic time synchronization enabled
• Show the same timezone and regional settings
• Run the same browser version    ascendant

However, when testing applications that rely heavily on user-entered date and time values, the calculated results occasionally differ between the two systems.

I have already verified:

• Windows Update status
• Time synchronization service
• Regional settings
• Browser settings
• System clock accuracy

Before I start investigating deeper, I'd like to understand whether anyone has encountered similar behavior on Dell systems.

Specifically:

• Can Dell BIOS time settings affect browser-based calculations even when Windows time appears correct?
• Are there known issues involving timezone synchronization after sleep or hibernation?
• Is there a recommended diagnostic process for verifying that system time and locale information are being interpreted consistently across applications?

Any suggestions would be appreciated.

Thank you.