I have to laugh because you were mostly correct with that post on 12/17/2012. I remember that time with crystal clear vision. I had to refinance my first by the end of 2012. I was watching rates all year very closely. On 11/17/2012 the rate dropped from 3.125 to 3% for only a day or two.
That is when I locked in on a $417,000 cash out 30 yr fixed loan to consolidate a first and most of second subordinating the balance of the second. That was also a zero cost loan for a self employed individual. Rates may have been slightly lower for less complicated loans but that was the day.
My refi closed 1/17/2013 60 days later. That day (11/17/12) was the absolute bottom for rates for about 8 years. It was probably the only time in my life I caught an exact bottom. After that rates went up but not much hitting 4ish but staying mostly in the mid 3% range and remained the bottom until last year when refied I down to 2.625%.