What's the date of December 23, 2012?

What's the date of December 23, 2012?

December 23, 2012 is February 3, 2013, the beginning of spring and new year, Guisi year Jiayin month gengzi day

How many days are there from December 30, 2012 to January 22, 2013
If you have some kind and idle people, please help me. I really don't have a brain···

24 (including 30 days)

How many days are there from September 1, 1997 to May 22, 2012?

5378 days 176 months 22 days 768 weeks 2 days including September 1st and May 22nd

September 23, 2012 a year later is September 23, 2013 or September 22? How to calculate~

"After one year" generally refers to the same date after one year, so September 23, 2012 is September 23, 2013