So last week I bought an extra standing rib roast for prime rib since they were on sale. 7 1/4 lbs. or so, planning on smoking it for NY eve dinner. I took it out of the freezer first thing yesterday (Wed) morning and put in my refrigerator. This morning it still seems rock hard. My hope is to have it mostly thawed out by Friday (tomorrow) night, so I can put some rub on it and wrap it up, but I can do that on Saturday morning too. I don't plan on starting the smoke until about 3:30 - 4 pm on Saturday, planning on eating around 9 pm. Does anyone know how long this should take to defrost, or was I too late in taking it out? Is it safe to leave it out of the refrigerator to help defrost for a few hours? Or do I stick it back in the freezer and go get a fresh one (for about $2 more per lb)? Thanks.