User blog comment:BonesMcGee/Brainstorm: Potential savings in using the hurry hatch trick/@comment-5251515-20120928042602/@comment-5200570-20120928045941

I believe you just report based on your own timezone. As far as I know the date is more for organization and to possibly look for trends once a large enough sample is collected. If there is another purpose please correct me Bones.

As for the count, the count only resets back to 0 with your first egg after something other than a 12hh. So yes, if you let a 12hh hatch you need to keep track of the number that egg was then continue counting from there until you get anything other than a 12hh. It is possible for the count to continue for multiple days if you decide to hatch 12hh eggs.