Any time. I remember when I first started incubating peafowl eggs all I could find was the eggs hatch from 26 to 30. Average incubation period is 28 days. I should've joined BYC sooner but I don't really trust blogs since people could put things you don't trust but I've found more accurate...
I've never heard that before. My two incubators told me to rotate 1 or 2 times a day at least from day 1 to 3 days before hatch date. Also the hatchery I bought my incubators from the lady told me don't forget to rotate the eggs daily. Though I bought my first incubator when I was 7 which it was...