You have your bird (and a recipe), but how long, exactly, are you supposed to cook it? Here’s a handy guide.

No Thanksgiving guest is more important than the turkey. But you might have a late arrival on your hands if you don’t get it in the oven on time. Planning a 3 p.m. meal? You’ll need to have a 20-pound bird (sans stuffing) cooking by around 10:30 a.m. Don’t stress about the math—just follow our easy chart, with recommendations from the USDA.

Turkey Cook Time Chart 

RELATED: How to carve a turkey

Note: For safety reasons, the USDA recommends cooking stuffing outside of the turkey to guarantee uniform doneness. If you do choose to stuff it, check the temp of the center of the stuffing to make sure it, too, reaches the safe 165 degrees F (otherwise bacteria could contaminate your cooked turkey). Keep wet stuffing ingredients refrigerated ahead of time, and separate from dry ingredients until just before mixing, stuffing loosely and cooking. Sticking with a casserole dish? You should still cook the stuffing to 165 degrees F.

Get a complete Thanksgiving dinner menu here, or check out the USDA’s site for more turkey and stuffing safety and cooking tips.

Keep Reading: