If you're doing straight into dirt, without germinating them first, could take up to 14 days.
If the top of the soil is getting up to the 85 degrees you mentioned, you may be cooking them though.
Make sure you keep the soil damp, since they will be fighting to pop, plus fighting to push through the dirt.
The moistness will make the outer skin softer, (the reason somebody previous told you try soaking them 24 hrs. first)