For those who wonder why the M2 offset is different for $MSTR than it is for $BTC, that's because $MSTR is traded *5* days a week and not 7 days a week like BTC.

Some people give the example of 55 days offset for MSTR. I'll translate that:

55 WEEKDAYS is equivalent to 77 CALENDAR days (includes weekends). Now, you can see it's more similar to the offset with BTC (which I curretly have at 80 days), since BTC is traded 7 days per week.

So, really, MSTR and BTC are currently only 3 days apart.