My first hatch, I had 8 eggs. One hatched on day 18 and the rest on day 22 or 23. I was about to give up when the rest started to hatch. I was careful about my temps, humidity, and turning. This time, I didn't touch the temp or stress over humidity. I turned them once, maybe 3 times a day. The eggs still hatch just fine. I'm not buying into all the meticulous note taking and finite details that I have read about on here.