Targeted the +63 spot tonight during a break in the clouds from the unsettled weather currently passing though.
My ephemeris predicted the L3 to be 66 degrees and I measure it in this data to be 67.3 degrees so still reasonably accurate.
I measured the spot to be at Lat +65.5 and L3 67.3
I only had enough time to capture 1 685nm IR data set (9 minutes in total) before the cloud filled back in.