What's up with the clock?

[smp]

Hello all,

I just received my HP Prime yesterday (G8X92AA 2015 Version) and I have been having a great time exploring the Prime for spreadsheets and programming.

One thing I noticed is that the clock loses time over time. It appears that the clock lost something between 30-45 minutes from yesterday afternoon until this afternoon. Is this "normal?" Will I have to check the clock everyday and enter whatever correction is needed?

Thanks very much, in advance, for your patience and advice.

smp