Giant locations will be open until 5pm. If your Giant is a 24 hour store it will be open 24 hours, including Christmas day.
Safeway will be open until 8pm on Christmas Eve and 7am to 5pm Christmas Day.
Shoppers is open until 7pm and not open Christmas Day.
Target is open until 9pm and closed Christmas Day.
Walmart is open until 8pm and closed Christmas Day.
Best Buy is open until 5pm, but Towson is open until 6pm. Closed Christmas Day.
HH Greg is open until 7pm, the recording said nothing about Christmas Day.
All stores are to return to normal hours Wednesday, but you might want to call with the snow.