What does CCYYMMDD date format mean?

Question

I want to speak to a soap service that has a date parameter which is required to be the CCYYMMDD format.

What is its definition?

Answer 1

We are in century 21; not century 20. But they mean to write the year in a 4 digit format, so technically is yyyy. So technically ccyy is wrong. So if you are born in 1990, using the ccyy format is 2090, since 1990 is in the 20th century. But if you have to write a year, you have to assume that they are asking for yyyy, not ccyy. So for example, if you are born in 1990, and they ask you in ccyy, do not write 2090 (although technically is correct) instead write 1990. Assume they want the year in 4 digit format, not the century and 2 digit format year.