SQL agent job delayed for daylight saving

I have a SQL agent job scheduled at 2:00 am on Sunday.
But it was triggered at 2:59:50 am instead of 2:00 am last night, I think this is related with Daylight saving time,
Because that is exactly the time - 2:00 am should change to 3:00 am for that.

So my job delayed with corresponding job failed.

My question is:

I think the computer should adjust quickly itself, and I see now the clock is correct on the computer.
So what could be the problem when the job ran and delayed?

How can I fix this to avoid next day light saving time?

THanks

SQLFriend