2000 CE is a leap year with 366 days. 2001 CE and 2002 CE do not leap years and have 355 days. Logically, if I ask the number of days between January 1st, 2000 CE and January 1st, 2001 CE, I should get one more day than between January 1st, 2001 CE and January 1st, 2002 CE. This is not