m0useanswered grow question 3 years ago good question.
I count anything I do to the seed and soil before it pops out of the medium with its baby leaves at Germination week.
After this I count as week 1. I may round a day or two to make it match a Sunday or Monday.
So anytime I am uploading a diry on my week 1 I have already entered week two.
Some people like to break this down into day. like day 14 day 15... day 45 ext. within the weekly entry on their joural.
Its all up to you and how you want to do this on your grow.
I myself like weekly updates, I'm not doing to many things in the day to day.
Best Of Luck and Happy Growing!