I think that's how it works. You are supposed to submit the day after you became eligible so that the entire day would be counted. I also had difficulty on pinpointing the date when I can submit as the calculator keeps on changing. I was supposed to leave the country the day after my eligibility that's why i was keen on submitting right away. Flight got cancelled but submitted anyways. but if i could do it again, should have waited another day (or another hour), would have saved me some worries.Thanks for your reply @Cynch. My issue was not related to the timezone. The online system simply doesn't allow you to click on calculate your physical presence if the PR days are exactly 730 days. And when I increased the date by 1, I was able to calculate the days and it shows 731 PR days. So it's like this is the minimum. I suspect maybe people got 1095 days from more than 730+ days as PR. In your calculations, was your PR days more than 730?