Hey, C...long time no C. LOL
As per usual, your numbers and my numbers do not line up...my bad count, I'm sure. After all, I just plug mine into the Win10 calculator that's sposed to count calendar days. Wouldn't depend on that to fry eggs.
Just counting time by the chart I got time at 150 months...12.5 years and then some few days. Going off the chart, next month puts us into the zone of time between 150 and 180 or 12.5 and 15 years with 165 months representing the halfway point in time.
Hope all is well, C.
Don't be such a stranger.