How many days are there from 20 12.9.8 to 20 15.3.25?

From 20 12.9.8 to 20 15.3.25 * * 897 days, it was calculated on the heart-shaped webpage of Baidu romantic programmer html5.

20 12.9.8 ? 8 pm? The deadline for answering questions is 9: 32 am, 20 15 on March 25th.