23 eggs set in incubator around 10:00pm on February 27. Yesterday afternoon, pipping on 2, one hatched around 10:00 (top of day 19, right), one early morning before daylight. Through the course of today 10 more pipped and hatched over 2-4 hour spans each. 4 more have been pipped several hours but without the peeping, rolling and zeal as the earlier ones. 5 have no pipping (fairly sure 2 never began and 1 quit around 10-12 days according to charts-I don't have a light bright enough to really be sure). Temp held steady 99.5-100.2 (2 thermometers showing 1/2+- degree variation); humidity 40-50 till lockdown on day 18 then raised to 65-70. Wisdom needed. Other than day count being early; does this sound unusual, normal or what???