MoBo clock

My MoBo is set to boot automatically at 7 am. Today, 25 October, the local time in Mexico was set back one hour (US time change is in November). So 7am now becomes 6am. The PC booted right on its usual time from the previous Daylight Saving Time... which is now 6am!

So when I get to my desk at the new correct 7am, the PC has been running for a hour.

The time has correctly auto adjusted itself within the OS, so my question is: do I have to manually adjust the time on the MoBo, from within the BIOS?

This is not a UEFI-enabled motherboard, its just a plain Jane vanilla Dell.

Board Vendor: Dell Inc.
Board Version: A00
Board Name: 0GDG8Y

It should adjudt itself. You can check just by going into the bios. You should see the time there

Seems so, no?

That said, I don't recall ever having to change it...