4:50 PM. As you can see, the interior of the box has now exceeded a safe temperature.



Lesson: Never keep a packed box with a 72 hour heat pack in it, in an 80F room for longer than 10 to 15 minutes, tops.

I have now moved the box upstairs, where it is 74F, and I will check on it in a half hour and see if the interior temperature has gone up, or down.