Thread:Eugene.bae.902/@comment-27794543-20181224125525/@comment-27794543-20181224203822

You keep counting the duration, not the total days.

E.g. from Sept 13, 2149 to Sept 14, 2149 - duration is 1 day, but it's total two days, i.e. September 13 is day 1 and September 14 is day 2.

Similar for this, duration is 48,072 days, but since Sept 13, 2149 is day 1 (not day 0), it makes April 26, 2281 day 48,073.