This is probably a wildly dumb question, but for some reason the backwards countdown on the Mini Advance throws me for a loop. I set my eggs in the evening on February 21. Currently, the Brinsea reads Day 7. Does it count down to Day 1 or to Day 0? I know I lockdown when it reaches Day 2 (the 12th) so am I correct in assuming I should expect the hatch date to be the 14th? Math is hard.