Kimishima: Switch has “overwhelmingly positive” reaction thus far

[PAOerfulone]

Well seeing as how Nintendo usually launched their games on a Friday, I'm going to make the assumption that the they'll do the same for Switch, could be wrong though.
So that would leave the possible release dates if they stick to March - 3rd, 10th, 17th, 24th, and 31st. 5 possible release dates if they launch it on a Friday AND assuming it's a simultaneous worldwide release (An EXTREMELY rare case for video game hardware)
If it releases on the 3rd or the 10th, they could very well reach that 2 million mark.
17th would be stretching it.
24th or 31st - they're kidding themselves.